Both essential and nonessential hormones
Answer:
I could be wrong, but I believe the answer is D) State and National parks
Answer:
a = increased temperature increases the kinetic energy of the gas molecules.
b = higher temperatures will increase the energy and therefore the movement of the molecules, increasing the rate of diffusion.
An ectotherm gets its heat from external sources
(Remember "ecto" means outer, "endo" means inner)