Which characteristic describes the troposphere? A)contains the ozone layer
B)has the highest air pressure
C)spans 12-50 km above Earth
D)is a good place for planes to fly

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation