i think that the answer is c, but i just want to make sure. any would be appreciated.
which of the following is one way that soil can be managed properly?
a. over-irrigate crops.
b. remove all the topsoil from the area.
c. rotate the crops.
d. plant the same crop in the same field, year after year.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.