Oxygen and carbon dioxide
Answer: Aquifers that are drying up are mainly near arid climates, large cities, or agricultural stations, like farms.if the aquifer is shallow enough and permeable enough to allow water to move through it at a rapid-enough rate, then people can drill wells into it and withdraw water Excessive pumping can lower the water table so much that the wells no longer supply water they can "go dry."
I believe it’s b but correct me if I’m wrong
Answer:
Tissues exist within organs, which exist within organ systems. Communities exist within populations, which exist within ecosystems. Organelles exist within cells, which exist within tissues. Communities exist within ecosystems, which exist in the biosphere.
Explanation:
I do not know much about galapagos finches (have not read darwin maybe I should) . But you can be sure evolution is taking place on any species anytime. It is not about which species it is or what time it is. Evolution keeps going. Species keep changing, evolving, maybe very slowly, but it happens all the time.