__________ begins in an area where there was a preexisting community and well-formed soil
a. Character displacement
b. Species richness
c. Primary succession
d. Secondary succession
e. Competitive exclusion
D
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In insects, the level of ____ controls the formation of a pupa
a. molt-inhibiting hormone b. juvenile hormone c. prothoracicotropic hormone d. ecdysone e. insulin-like hormone
Which statement best describes the plot in the accompanying figure?
a. The figure represents an endergonic reaction.
b. The figure represents a spontaneous reaction.
c. The products have more free energy than the reactants.
d. The reactants have more free energy than the products.
e. The reaction is endergonic, and in addition, the products have more free energy than the reactants.
What type of scientist classifies organisms into groups?
A. taxonomist B. botanist C. zoologist D. embryologist E. geneticist
__ are not found in the seminiferous tubules
Fill in the blank(s) with the appropriate word(s).