These are the recommended review questions.
Pg 23 #3,5
Pg 30 #3,6
Pg 32 #5,7
Pg 47 #1,3,4,6
Pg 54 #1,4,5
Pg 56 #6
Pg 67 #3,6
Pg 82 #1,3
Pg 88 #25, 33, 34
Pg 30 #3,6
Pg 32 #5,7
Pg 47 #1,3,4,6
Pg 54 #1,4,5
Pg 56 #6
Pg 67 #3,6
Pg 82 #1,3
Pg 88 #25, 33, 34
Students from each class were assigned a question, and required to post their response in the comments below. If you are having posting issues, please email me your responses by Sunday.
Formatting:
Pg ___ Q ___
<4-5 sentence response>
Initials 7A/7B
answer to pg. 54 #1
ReplyDeletePopulations are limited in ecosystems because biotic elements "regulate" themselves. Although the ecosystem changes the population can only change so much. That is because there is always a factor keeping biotic population in check. For example the producers factor could be primary consumers because primary consumers eat producers keeping the producer population from going to high. In the snow hare and artic lynx experiment we saw the population almost always repeats itself. That's why population in ecosystem are limited.
What is organic matter? Organic matter is matter that has been derived from biotic things. Organic matter is something with organic compounds the people add that people add to their gardens. It is made up of decaying plants, animal material, or dead insects. Organic matter contains acids which can make plant roots more permeable. Which improves the intake of water and nutrients.
ReplyDeletePg.23 #3
ReplyDeletePlants can be found everywhere and are consumed by biotic omnivores and herbivores. The system of photosynthesis is the chemical reaction when plants absorb the suns energy. This causes plants to grow, thrive, and create a sugar substance for it to digest, and create clean are with. There for photosynthesis is important because, with out it plants could not thrive, the air would become contaminated/ dirty, and energy would be unable to pass through a food chain.
-T.B (7B)
Pg 47 #4
ReplyDeleteWould you expect an ecosystem that has not been disturbed for 20 years to remain the same? Why or why not?
I would expect the ecosystem to stay the same. Firstly, i think this because if an ecosystem was not disturbed, there would be no physical changes. Also, if there were no physical changes, the species living in this particular ecosystem would not need to adapt to a new way of life. Another reason i think it would stay the same is because if it was not disturbed by a bioinvader, the ratio of food supply to consumers would only change because of how the population cycles change over time. For these reasons, i suspect that the ecosystem would remain the same.
By M.W 7B
pg.67 Q.6 science study notes
ReplyDeleteIn primary succession, abiotic elements arrive first.At the beginning pioneer species cling to to rock surfaces to begin to form soil,small plant seeds blown into soil.This all started with the rock.The rock is an abiotic element.There for in primary succession abiotic elements arrive first.
J.K
Page 56 Q 6
ReplyDeleteI think that it does because when we recycle, the less that gets thrown away and pollutes our earth.As well as if we recycle old stuff it can become new stuff that can be helpful to our environment. Recycling can also teach us to appreciate what we have and not what we need. Recycling can also save energy, such as when we use recycled light bulbs it can can help us save our energy and make our world a better and cleaner place
answer to question number 4 pg 47
ReplyDeleteif an ecosystem had not been disturbed for twenty years i would think it would sty the same because, if its undisturbed it means it taking care of its means which means that herbivore eats plants then the carnivore\ omnivore eat the herbivore but each animal doe reproduce.without the influence of humans there is no hunting for food and fur or for fun so the animals quantity doesn't go down. this is why i believe tat the ecosystem would stay the same.
- JB 7B
p.g 54 question #5
ReplyDeleteThere are many factors that affect the ecosystem. One of them is food supply. For example if food was running low then more and more animals would die off. If there was lots of food then the population would increase. Bioinvaders are another thing that could affect the population. If a bioinvader came into an ecosystem it could thrive and kill of a whole species. One more factor w that could affect the ecosystem would be a natural disaster like a hurricane or a tsunami or an earthquake. If a natural disaster came to an ecosystem it might scare away animals and wipe them out.
a.s
answer to pg.23 #5
ReplyDeletePlants are called producers.
Producers can make their own food to supply the matter and energy they need to survive.
Sometimes they can be eaten for food. For example deer, rabbits, and cows only eat plants.
Others eat living things that eat producers.
by KD 7B
Pg 88 Q#33
ReplyDelete(F) edit:Ecosystems can be both large or small, as long as it has the required needs; air, water, shelter, food, and open space.
(T) edit: Ecosystems are communities where biotic and abiotic elements interact; animals and plants need to make use of abiotic elements in their ecosystem to survive (eg. water, rocks, soil).
(F) edit:The stones and sand in a puddle can be the abiotic elements in an ecosystem, assuming that there is air, water, shelter, open space, and food.
page 30 number 3
ReplyDeleteWhat happens to the leaves is that they decompose into soil. It decomposes into the soil by when people step on them and they sink into the ground. The leaves also get crumpled up and go into the soil. And some of them get blown by the wind. But the mostly likely one is that it decomposes into the soil [by] the insects and bacteria that eat the leaves and that's how it decomposes.
KA 7B
pg54 Q5
ReplyDeleteMany different factors affect the population of an ecosytem. Some are lack of food, clear-cutting, pollution, hunting, bioinvasion, etc... All these can affect the population like lack of food can starve animals, clear-cutting can destroy animals habitats, bioinvasion can destroy the ecosystem and pollution can make the ecosystem dirty. Most of these factors are from humans and how people are careless and are destroying the planet.
R.L. 7A
Page 30 question 3
ReplyDeleteWhen leaves fall in Fall they are gone by the summer why? During the winter decomposers like worms eat through the leaves breaking them apart. When the worms vacate their bowels their waste is full of the nutrition’s of the dead leaves. This is good for the environment because plants’ roots soak up the nutrition’s helping them survive the cold Canadian winter. The leaves after the winter have been completely decomposed and have diapered.
Page 67 #7
ReplyDeleteIn primary succession biotic elements arrive first. These biotic elements are called pioneer species. Two examples of pioneer species are lichens and grasses with long roots to hold sand dunes in place. Primary succession can take place on sand dunes, rocky shores, and volcanic islands.
A.N 7A
Page: 47
ReplyDeleteQuestion: 3
Humans can help with the cycling of basic nutrients by recycling food. When they recycle their food, it gets decomposed and breaks up into soil. Humans can also plant plants to help the bog and help us live. And finally, humans can help by not disturbing wildlife to let things live.
D.D. 7A
Science review question.... Post on the blog. 4-5 sentences
ReplyDelete88 #34
34.a) A developer filling in wetland to build houses because on pg.45 under " Changes resulting from the cycling of matter" it says the cycle can only take place if the ecosystem is "undisturbed". A wetland is one of the main parts of any ecosystem, so filling would disturb the ecosystem greatly. If the wetland is being filled, it would kill many animals and disable the cycle from proceeding as usual. That is how filling in a wetland would disturb the cycle of change matter.
b.) A farmer ploughing a Grassland would wreck the cycle of changing matter because it would disturb a previously undisturbed ecosystem. It would kill all the animals habitat and other animals food. Because it is disturbed, you would be unable to observe the cycle of changing matter.
c.) A town changing its drainage system to reduce flooding would affect the cycle of changing matter because it would change the ongoing cycle. The flood would kill some animals, but when the land dries, the decomposers would come in and restart the cycle of changing matter.
MY & GR 7A
Pg 47
ReplyDelete#1
What is an organic matter?
I will explain the steps of organic matter. An organic matter is an abiotic element. The abiotic elements are used over again. Then the consumers absorb the organic matter. They way the consumers absorb it is by feeding interaction and use it for growth. As the organic matter grows it produces organic waste. The last part of the cycle matter makes sure there will be consonant abiotic supplies to the ecosystem. That is the cycle of organic matter.
By O.C 7A
Pg.67 Q:6
ReplyDeleteIn primary succession abiotic elements must come first. There needs to be a suitable environment for producers to grow and reproduce. For example all plants need the sun, an abiotic element, to thrive, they also need soil. Plants and pioneer species such as lichen help break down the already existing abiotic rocks to form soil so other plants can grow. Once producers are thriving consumers and secondary consumers can move in.
- C.M. 7A
Science page 82 question 3: list 3 impacts human activities have on water
ReplyDeleteHow human’s impact water is garbage; Humans throw garbage in the water and animals in the water might eat the garbage and choke on the garbage and might die. The second impact is an oil leakage in the water; the oil will go on to the animals and could kill them. The third reason is chemical; examples bleach if animals drink it they will be blind and will die. The final reason is high water consumptions by humans, humans are using more water so there is little amount of water for organisms in the water.
by Jordan R 7A
Pg. 54 Q. 1
ReplyDeleteIn all ecosystems there is a limit to the amount of biotic components. Some of the main reasons for this include: competition between species, natural disasters, and population cycles. species compete for sunlight, food, water, and space, and when one species gives in, it will not be able to get the necessary nutrition which can stop the population from becoming too large. Natural disasters can stop a population from exceeding its limits because they can cause so much destruction, that it can destroy ecosystems. Population cycles always puts a limit on the population because it shows that if one specie's population goes up it will soon drop.
Tyler 7A
Pg 23 #5: How would planting a variety of plants in a vacant lot help establish an ecosystem in that location?
ReplyDeletePlanting different plants in an ecosystem helps with diversity. If you plant only one producer, chances are, there ain't gonna be much variety of consumers. If you plant many different producers, there will be many different animals. In an ecosystem, there are producers, consumers, decomposers, and scavengers. With more biodiversity, comes a healthier, and bigger ecosystem.
Pg. 30, #6
ReplyDeleteAquariums are not considered ecosystems because they are missing many key components. If you wanted to make a real ecosystem it would have to be enormous because all the animals need lots of space. Most importantly you would need biodiversity. Most aquariums have only one type of fish and mostly fake plants. An ecosystem needs a variety of biotic and abiotic components to become complete.
-Douglas Byers 7A
PG 23, Q 3
ReplyDeletePhotosynthesis is a chemical reaction that takes place on the leaves of green plants. This is an important process because it creates a sugar product called glucose, which produces food for herbivores. Another thing photosynthesis does is releases oxygen from the pores in the leaves. The green colour is a compound called chlorophyll which is needed in the process.
Tarik Altay, 7A
Page 89
ReplyDeleteQuestion 33
A) The statement that all ecosystems can only be large is false because ecosystems can be many different sizes.If a biotic and abiotic elements interact that is an ecosystem so that means that ecosystems can be large or small.
B) Biotic and abiotic elements are both needed elements in a ecosystem.They both work together to make a healthy and well contained ecosystem/ biome.
C) stones and sand in a puddle can not make a ecosystem because they are all of the elements are abiotic.You need Biotic elements to create an ecosystem so sand, stone and a puddle of water will not be a ecosystem.
-E.T & C.VP 7A
page: 47 Question: 6
ReplyDeleteThe earth's ecosystem recycles in many ways. First, when an animals die, other animals will come and take the dead meat. These animals are called "scavengers". Scavengers only eat dead meat. So if there is a dead animal on the ground, instead of rotting and creating bacteria, scavengers go and eat (recycle) the animal. Another example is that "decomposers" break down dead plants. They break down the plants so if the plant dies, it spreads the bacteria, but Decomposers remove the plant before it spreads.
Maria Forstner, 7A!!!
Pg 82 #3
ReplyDeleteHumans make use of the environment for their own needs. We know that the Earth is mostly water than land, so we used it for simpler movement or even water sports. Ships are a mode of transportation, sometimes accidents could happen: oil spills. Even the slow movement can scare away many aquatic animals. Sometimes the propellers of submarines may catch hold of fishes and thus killing it. Fish is a main source of food for animals and humans. We obtain fish by fishing; overfishing can affect the environment because this would mean lesser food for the animals eating it and leave them dying from hunger. All in all, humans make quite a lot of bad impacts on water.
Russell 7B.
Forest Fires: Two years after a forest fire, fireweed would establish itself. The heat-opened pinecone seeds would have grown into small saplings. There would be a lot more light in the forest because the tall trees are now burned down.
ReplyDeleteLandslide: A landslide is not the most catastrophic thing that could happen to an ecosystem. A landslide will rearrange the landscape but will not kill all of the plants. Soon the ecosystem will re-establish itself.
Farm cultivation: Two years after farm cultivation, minerals will return to the soil and grasses will grow. It will look like a meadow.
Urban sprawl: Most ecosystems won't recover from urban sprawl, especially if there are pollutants in the air and/or water.
Josh 7B
Josh Keown Page 67 #3
ReplyDeleteAnswer of page 88 #34
ReplyDeleteA) By filling in wetlands it could kill animals that live in the wetlands and the animals that use the wetlands for food and water. Also builders would have to dig down underneath the wetland
to put pipes in which could destroy the area.
B) By ploughing up a grassland to plant a crop the population of the animals will increase because they can eat the crop and the crop would always be there for them. Also other small animals could die because of the pesticides and there species could decrease.
C) By reducing flooding it could damage aquatic animals near by that lived in the area. Also animals that rely on the water source could die off because by building the drainage system, the drainage system could change the habitat so the animals couldn't live by it because it is dangerous. Also the animals wouldn't come back because the drainage system could cause erosion and some water build up. finally the increased moisture from the drainage system could cause bacteria growth and the bacteria could find its way into the drinking system.
By: E.S and L.P
ReplyDeletepg.47 #6
ReplyDeleteQ:"Earth's ecosystems recycle." Is this statement true or false? Explain your answer.
A: It think half is true and half is false.Animals and plants in food chains is recycling, the stronger eats the weaker, and when the stronger die, their bodies turn into minerals, so the the weaker animals and plants can use.It's false because the abiotic didn't recycle, they're there forever.
C.H. 7B
Pg. 82 Q.1
ReplyDeleteecosystems can naturally change by natural disasters; such as tornadoes, landslides, fires and storms. Ecosystems can change in both good and bad ways. For example, if there is a tornadoe, it could blow away many plants. Also landslides could cover many plants and stop them from growing. But the changes that are good could include evolution. If a group of primary consumers were dying to fast, they could evolve to bevome faster or to live in bigger groups. Also the biome can purposly dry it self so the plants that have been deseased, can be burnt and than be planted again.
by M.L
ReplyDeleteWhat is the format of the test going to be and also, are we supposed to study everybody's questions that are posted or/and study the keywords?
ReplyDelete-N. Z
Page 32 Question 5 b)
ReplyDeletei) If a deadly toxin was released into a river running through a forest, all animals that drank from that river would become infected and die. As a result, all other animals would die from ether starvation, cannibalism, carnivorism, or the toxin itself. With all of the dead animals decomposing, the toxin would be absorbed into the soil killing off most plants.
ii) If the hawk population increased, the hawks would kill and eat more than the population of the biome could handle. The hawks would eat until that animal couldn’t be found in the area. The hawk species would go into cannibalism and carnivorism.
Some of the environmental factors effects ecosystem. Climate can effect an ecosystem because if an area is 15 degrease and the temperature drops to-10 degrease that will kill off some of species and populations. Predators and bio invaders can effect the population by over eating. A herbivores co over populate and run out of food. Pg 54 Q5 E.J
ReplyDeletepg 33 #7
ReplyDeleteI think that some of the changes are caused by humans because of global warming,pollution and factories that contaminate the air.The first reason is global warming by global warming with cars , spray cans and potential over heating electronics causes places that are colder to melt and animals have no where to live. The second reason is pollution when you drop a wrapper or a can , it can contaminate the ground and it is not a good environment to grow in and one plastic bottle can take over 10,000 years to decompose. The last reason is factories gases that come out are smog it makes the air hard to breath in and makes the city really disgusting. Those are all of the reasons why I think humans are causing these changes.
T.C 7A
Question 4, page 47: Would you expect an ecosystem that remained undisturbed for 20 years to remain the same? Explain why or why not.
ReplyDeleteYes I think it would change. A main factor is population cycles. Population cycles change their ecosystems because the cycle changes/determines how much biotic and abiotic material thee is in that particular ecosystem. For example, when the plant population grows because not too many things are eating them, the deer population goes up with the new abundance of food. Now the Sus Scrofa population can grow, 'cause there are more deer to eat. Soon there becomes too many deer for the plants to cope with, and the plants start to die off. The deer have less to eat, so their numbers fall, too. Now the Sus Scrofa has less to eat, heir population starts to decline. With less plants and animals, there is more water and unused sunlight, a.k.a. more abiotic material. This cycle will repeat when the plants numbers increase again. This is just one of the natural ways an ecosystem changes. In conclusion, I don't think there is anyway ANYTHING can stay unchanged for twenty yyears, especialy not an ecosystem.
Page 30 #6
ReplyDeletePART #1
An aquarium is not an ecosystem for many reasons. First of all, it has no scavengers, decomposers, or detritivores; it relies on humans to clean out waste and fish that have died. Second, the aquarium would have no producers, only fish food, and no primary or secondary consumers, depending on the type of fish in the aquarium.
PART #2
Yes, you could make an aquarium an ecosystem. One of the things an aquarium is missing is producers. That can be fixed simply by adding aquatic plants. Another thing the aquarium is missing is consumers, either secondary or primary. In order for predators and prey to live together in the same aquarium, it would have to be big, so that the prey could escape and/or hide.
Pg. 88 #33
ReplyDelete33. Identify which of the following statements are false. Reword the false statement to make them true.
a) Ecosystems can only be large. False
Ecosystems don't have to be large because ecosystems are part of biomes. Biomes are a large geographical area with similar ecosystems, meaning biomes are made of different ecosystems of different sizes. For example: Wetlands are made up of 3 different ecosystems: bogs, swamps and marshes. Those ecosystems can vary in sizes because there can be more that one of each ecosystems in different sizes to build a biome.
Ecosystems can vary in different sizes.
b) Ecosystems contain both biotic and abiotic elements. True
c) Only stones and sad in a puddle are needed to make up and ecosystem. False
Stones and sand in a puddle are part of some ecosystems but don't make it up because because an ecosystem describes the interaction between biotic and abiotic components. Stones, sand and water are abiotic components but ecosystems need biotic components. Ecosystems need biotic components like animals and plants and without that an ecosystem won't ecosystems won't be the same.
Stones and sand in a puddle are part of some eco systems.
J.Y 7B
WOW! 7s I am tremendously impressed with your use of this thread.
ReplyDeleteUse these answers as a study guide. You should be familiar with all of the terminology from the 7B crossword, as well as the concepts in the responses on here. I would suggest that you each do the other questions (maybe just 3-4 a day) and then check your answers against your peer responses found in this thread.
The test is on Friday, Day 1. There will be two complete variations of the test, as well as a Part 1 and a Part 2, to accommodate the break over the lunch period.
Part 1 (K/U, C)
Multiple choice / fill in the blank / matching
Short Answer / Diagrams
Part 2 (T, A)
Extended Response
Olivia McLeod 7B writes:
ReplyDeletepg88 #25
The air could get polluted from the smoke. The living things around the pile can suffocate and be poisoned from the melted plastic. The smoke/plastic/chemicals could contaminate the water around the pile and therefore make it useless for washing, drinking, and farming. In my opinion, there is no way that they could help the environment to recover again, but, in the future, I recommend that they do NOT ever, ever, do it again.
Page 54 #5 Isabel 7B
ReplyDeleteSome factors that affect the population in an ecosystem are bioinvasion and competition. Bioivaison affects the population in an ecosystem because when a bioinvader comes it destroys some species, so the population goes down. And competition is a factor because living things are always struggling to meet their own needs at he expense of other living things.
Page 30 #6
ReplyDeleteA Aquarium is not considered a ecosystem because it does not have producers and consumers. There is no food chain. It also needs to be an open space because ecosystems have a lot of open space for the animals to move and live in. The Aquarium also does not allow sunlight to come in either
Kendall Watts 7A
pg#88 q#25
ReplyDeleteThree ways this could affect he environment are. The first way this can affect the environment is by polluting the air. This affects the environment because it kills many animals,plants, and makes ecosystems unbalanced. The second affect is global warming. Global warming is an affect because it destroys many biomes and animals. The third affect is disease, disease can contaminate animals which bad for the animals, but can cause harm to the humans who eat the animals.
Here's how the environment could recover. A way the environment can recover from pollution is this. The environment can sometimes heal naturally, for example. Wolfs eat bunnies, and bunnies eat grass. Lets say there was something wrong with the wolfs population so the bunnies started over populating, but then there would not be enough grass so the bunnies would start dying. If the bunnies population became smaller it would give it a chance for the grass to grow back. After that all of the cycle could slowly come back into place. A way the environment would heal from global warming is, all of the plants and animals adapting to the rising temperature of heat. This would help many species survive in the long run. The final thing the environment could do to heal from disease is, humans could find contaminated animals and put them separate from the rest of the animals, so only they would be contaminated.
M.S.&C.R.
pg 54, Q4
ReplyDelete4. what is sustainability?
Sustainability is when the environment can keep up with a balance of needs and resources over time, for example food, water, air, shelter and open space. In the past, the small aboriginal population used resources in a way that didn't drain any of the resources needed by other biotic elements. The practices by the aboriginals supported sustainability, that is the way the ecosystem's ability to continue or sustain itself.
AHB
What is Sustainability?
Sustainability is when an ecosystem cam maintains the balance of its resources. For example the Native America people used little resources and got the maximum use out of their resources. One of the things they would do is hunt and kill a deer. Then they would skin it using the hide for clothing. Then they would take hang and cook the meat for food. Then they would use the bones for tools and weapons. This shows what they did to make their ecosystem sustainable.
An example of non-sustainable behaviour is gorilla poachers in central Africa. They poachers would kill the gorillas cut off their hands and head and sell them for money. Doing this it made a drastic change of lower gorilla population and increase in plant population. This shows the unbalance of plants to animals in the ecosystem. These are some examples of sustainable and non-sustainable ecosystems which support’s what sustainability is.
WJ 7A