What is an ecotone?
a. a parasite that is external to the body
b. a parasite that is internal to the body
c. an example of an individualistic hypothesis
d. a zone between two communities
e. the combination of species in an environment that is constant
ANSWER: d
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An organism's is its position in the food chain, relative to the ecosystem's energy source.
A. keystone level B. climax level C. trophic level D. habitat E. niche
__________ relieve allergy symptoms by dampening the effects of histamines. Fill in the blank(s) with the appropriate word(s)
MRI is a type of imaging technique that can detect tumor consistency
Indicate whether the statement is true or false
When dimethylsulfoniopropionate (DMSP) is aerobically degraded in a marine environment, which product is most often used to support growth?
A) acrylate B) dimethyl disulfide C) dimethyl sulfoxide D) methanethiol