Gases in the air that are present in very small amounts are called
gasses.

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.

15. what can be inferred from the fact that there is little diversity in the form of mc1r gene found among individuals from equatorial africa?

If the temperature in an area drops five degrees between one day and the next, has the climate of the area changed? explain.