The base of the pyramid is composed of species called autotrophs, the primary producers of the ecosystem. All other organisms in the ecosystem are consumers called heterotrophs, which either directly or indirectly depend on the primary producers for food energy.
I would say Australopithecus because so far, its skull is the one that resembles the most that of a human's.
the answers are 1 3 4 and 5
>Temperature
>Soil
I think so..................
Stem cell are important because stem cells represent an exciting area in medicine because of their potential to regenerate and repair damage tissue .
