Which is not an example of an earth system cycle?
a. seasons
b. tsunamis
c. food web
d. day and night

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which description provides the best objective summary of the article in the passage?

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.