What is the general name given for the types of organs that produce hormones?

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

Which particle controls what element an atom is?

Achange in which factor will affect the rate of reaction only when gases are involved? temperature pressure surface area concentration