D. an RNA molecule since the RNA molecule contains information for making proteins
I believe the answer is 2: multiple ecosystems in a biome
Answer:
There is an outer core and an inner core. The outer core is extremely hot and is made mostly of molten (or melted) iron, which is called magma. It is about 1300 miles thick
A long reflexive pathway has an advantage over a short reflexive pathway in the fact that they can be also be stimulated by the central nervous system, whereas the short reflexive pathway is only stimulated by the enteric nervous system.
