The relationship between a flea and the animal it feeds off of is an example of
A) parasitism.
B) commensalism.
C) symbiosis.
D) both A and C
D
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Weather deals with short-term atmospheric phenomena in a given region; ____________________ involves long-term characteristics of the atmosphere for that region
Fill in the blank(s) with correct word
There has been almost no well-organized movement opposition to the strong environmental laws passed in the 1970s.
Answer the following statement true (T) or false (F)
Inversions that form as air slowly sinks over a large area are called ____________________ inversions
Fill in the blank with correct word
Plankton are organisms that float. Why is a copepod, which can swim and propel itself through the water, classified as plankton?
a) It lives at the surface of the ocean where plankton live. b) It was classified as a plankton before it was known that copepods are swimmers. c) It has a swim bladder that keeps it from sinking, so it is a floater. d) It spends part of its life floating and part swimming, so it is classified as plankton because of the floating part. e) Because of its small size, it cannot swim very fast or very far, so its location is determined by currents.