________ selection and ________ selection tend to reduce the amount of variation in a population, whereas ________ selection tends to increase the amount of variation in a population
Fill in the blank(s) with correct word
Directional; stabilizing; disruptive
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Water held behind a dam would best reflect ______.
A. heat energy B. mechanical energy C. chemical energy D. potential energy E. kinetic energy
If there are 10,000 calories of net primary productivity in a field, how much, on average, will be available to a secondary consumer?
A. 100 calories B. 1 calorie C. 10 calories D. 10,000 calories E. 1,000 calories
A new highway is built in an area. Half of a population of a certain species of animal is on one side of the highway and half on the other side. The animals are unable to cross the highway. The highway creates an example of
A. behavioral isolation. B. seasonal isolation. C. geographic isolation. D. polyploidy.
Multicellularity is a trait that has evolved independently in
A. animals B. plants C. fungi D. all of the above