Hikers are attempting to cross the arizona desert with a small supply of water. the temperatures cause them to sweat profusely and become dehydrated. the hikers are experiencing:

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely