With the beginning of the middle proterozoic comes the first evidence of oxgen build up in the atmosphere. with is catastrophe came eukaryotic forms. these include multicellular algae, and toward the end of the proterozoic the first animals
Some examples of homeostasis include:
- Blood glucose concentration regulation
- Blood water potential
- Temperature regulation
A) toward the earth ...hope this hlep
I think I’ll go with C. long dry cold winters
They use Punnett squares to determine the sex traits or possibilities of having a boy or girl. They also determine the sex linked trait or the genes.
