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HLJ2/2

food chains, webs and pyramids

QuestionAnswer
How are food webs and chains the same? involve food
How are food webs and chains different? chain is in a line; web can overlap
What is a food web? shows how a group of food chains are linked together
define competition the struggle of several organisms for the same resource
what is the importance of a food web in the environment? so organisms can get energy to survive
Why do organisms in a food web compete for food? SO THEY CAN SURVIVE
Even if an animal like a sea otter does not eat kelp, can a shortage in kelp affect its food supply? yes
If one organsim in a food web dies out, what do you think might happen? They're going to relocate.
Define population all members of a single type of organism in an environment
Is one organism in an environment more important than others? Why or why not? No, because if one population in a food web dies out all the others can be affected.
What are some examples of pests? beetles, certain types of insects, rodents
What could happen if a new animal were brought in to control specific group of pests in an area? it could completely rearrange the food web in a good or bad way
Why could scientists not tell what would happen when they brought the cane toad to the sugarcane fields? They didn't experiment.
What information does a food web provide about the energy in an environment? It shows you how energy goes from organism to organism as food.
What is an energy pyramid? It is a model that shows how much energy flows through a food web.
What info does an energy pyramid provide about the energy in an environment? It shows what energy which animal needs.
What percent of the sun's energy do plants use to live and grow? 90
What percent of the suns energy do plants pass along to the consumers that eat them? 10
Why are producers at the bottom of the pyramid? They don't have to rely on other organisms, but can be consumed.
Created by: buffychapman
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