1point
the productivity of a freshwater ecosystem depends on water movement. in
which of the following freshwater ecosystems does water move constantly in
one direction?
o a. bog
o b. stream
o c. marsh
o d. swamp
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Where does the information about where each transcription factor binds originate?

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing