Choose all the answers that apply. the mantle is the thinnest layer is the thickest layer is the hottest layer is made of solid rock sometimes breaks through the crust

Answer;
-Thickest layer
-Hottest layer
- Is made of solid rock 

Explanation;
The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. 
The mantle extends from where the crust ends, it is the thickest layer of the earth, composed of silicate rocks, and very viscous. High temperatures make the silicate material to be ductile thus can flow.

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.