Biotic and Abiotic Factors
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by Dianna Goolsby
| 5 Questions
1
1
The aquarium ecosystem below has both biotic and abiotic factors.

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Which is an abiotic factor in this ecosystem?
2
1
The figure below shows a forest habitat. It has several kinds of organisms living in it. Forest animal species can be affected by events in its environment.
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If above-average rainfall led to an increase in the supply of acorns, what would happen to the population of squirrels?
3
1
Earth’s environments include both biotic and abiotic factors that living things need to survive. Large mangrove ecosystems are found along the coastlines in Florida. The figure shows a mangrove ecosystem that has both biotic and abiotic factors.
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List the abiotic factors in the mangrove ecosystem.
There are four levels of organization in an environment. The figure below shows the levels of organization in a wetland environment. Herons, snails, crabs, grasses, and other organisms live in and around the wetland.
4
1
Which level of organization is at each step of the pyramid?
5
1
The figure above shows the organisms and other parts of a marsh. Each of its different parts is affected by the other parts. Describe how herons might be affected if a long drought reduced the amount of water in the marsh?
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