Natural selection acts on ____, while ____ evolve.
Fill in the blank(s) with the appropriate word(s).
Individuals; populations
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Water enters the atmosphere because of
A. plants releasing water from their surfaces. B. evaporation from the soil surface. C. evaporation from lakes, rivers, and oceans. D. All of the statements are correct.
What is a language and how does a language family differ from a language branch and language group?
What will be an ideal response?
On average, how many 100-year floods will occur in 500 years?
a. 0 b. 1 c. 3 d. 5 e. There is no way of knowing for sure.
The primary job of APHIS is to
A) intercept pests arriving through international or interstate commerce. B) monitor and evaluate pest control using IPM methods. C) develop new biological pest control methods. D) monitor biofouling organisms and their damage to ships, docks, and dams.