Ecology Study-Guide
Biotic Factor – A living part of an
ecosystem.
Abiotic Factor- A nonliving part of an
ecosystem. Examples -
Population- All the members of ONE
species in an ecosystem.
Community – All the different
populations that interact in an
ecosystem.
What is the difference between a
population and community?

What is the difference between a
community and an ecosystem?
Producer- An organism that makes it’s
own food.
Consumer – An organism that eats
other living organisms for food.
Decomposer – An organism that
feeds on dead organisms to recycle
the nutrients.
What is the source of all energy in an
ecosystem?
If the number of producers in an
ecosystem decreases than the number of
insects in the ecosystem decreases.
Which level of the food pyramid has the
most energy?
What happens to the amount of
energy as you move up the food
pyramid?
13. There was a drastic increase in
snowshoe hare during year 49
because the Lynx went locally
extinct in year 42
14. Years 25-40
You can explain why other ranges
are acceptable.