Why would it be hard to find the ideal light intensity if the temperature were very hot or cold?

c. genetic engineering

explanation:

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands