Examlex
Which of the following is a part of the brain stem?
Hypothesis
A testable statement about the nature of an observation or relationship. Compare with scientific theory.
Decomposers
Microbial heterotrophs that break down dead organic material and use the decomposition products as a source of energy. Also called saprotrophs or saprobes.
Ecosystem
A community of living organisms in conjunction with the nonliving components of their environment, interacting as a system.
Available Nutrients
Nutrients present in the environment that can be readily absorbed and used by organisms for growth and metabolism.
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