Exam 24: Principles of Ecology

Within an ecosystem, plants are known as producers or ____. ​

Which of the following is NOT a characteristic of the Earth's water cycles?

Which is NOT part of the nitrogen cycle? ​

The study of the interactions of organisms with one another and their physical environment is ____________________. ​

What percentage of the atmosphere is nitrogen gas? ​

Humans incorporate nitrogen into their bodies ____. ​

Match the letters in the diagram of the nitrogen cycle to the statements below.​ -nitrogen gas in atmosphere

Organisms that get energy from the remains or products of organisms are ____________________. ​

The red-cockaded woodpecker that builds nests mainly in one type of tree that is of a certain age is a(n)____________________ species. ​

The major carbon reservoir in marine ecosystems is ____. ​

Which species lives in "disturbed habitats"? ​

Match the following letters of a biomass pyramid of a lake with the statements below.  -large-mouth bass ​

The movements of nutrients from the environment to organisms and then back to the environment is a(n)____.

Carbon enters the atmosphere through all of the following sources EXCEPT ____. ​

Match the letters in the diagram of the nitrogen cycle to the statements below.​ -nitrites in soil ​

A(n)____________________ is the type of place a species normally lives. ​

Match the following letters of a biomass pyramid of a lake with the statements below.  -small fish and invertebrate ​

A(n)____________________ is a large-scale community of organisms in a major ecological setting. ​

Organisms that eat producers are known as consumers or ____________________. ​

In which cycles do non-gaseous nutrients such as phosphorous move?