A tour guide taking a group through Costa Rica describes it as a lush, moist, tropical rainforest. A
Biological community
B
Biosphere
С
Population
D
Ecosystem

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.