Specific gravity is a property that describes how dense something is compared to water (density = 1 g mL ). For instance, sulfur has a specific gravity of 2.0, which means it has a density of 2.0 g mL . The table lists the specific gravity of four common metals. Making instruments to transmit sound is an important technological advancement. If a designer wants to transmit sound as quickly as possible through a wire made of one of these substances, which substance would she choose?

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait. 

Average growth population growth