How have vertebrates and insects evolved from a common ancestor?

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

What do science, technology, and disease have to do with each other?

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air