What are two possible limiting factors that might cause the population of fog beetles to level off?

disease and predators

habitat loss and more beetles immigrating to the desert

natural disasters and more beetles immigrating to the desert

none of the above

The correct answer is option A which is, "Disease and predators".

Explanation:

The decrease in beetles population is the result of disease and predators for the fog beetles.

In the given option, like in A the habitat loss can be one reason but the immigration is not the reason. Because immigration means the moving into that area from the foreign area. Immigration leads to the increase in population size not decrease.

And disease is some abnormality related to beetles which leads to their death and ultimately decrease in population size.

And predators are some other insects and birds which use them as their food and is limiting factor.

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.