• A(n) usually takes the form of a concise mathematical or verbal expression; a(n) explanation for observations.
provides an explanation for the observations

An easy way to calculate the amount of energy available at each level is to what?

How many major plates cover the earth

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.