Which of the following statements best explains why genetic variation is important to the survival of a population? A. Genetic variation decreases gene flow in the population.
B. Genetic variation decrease the likelihood of genetic mutation.
C. Genetic variation increases the size of animals so that more offspring will be produced.
D.. Genetic variation increases the likelihood of an allele being present that is best suited for
the environment.

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?