What does the red node represent? (choose all that apply) Question 1 options:

The common ancestor of species A, B, and C

The common ancestor of species A and B

A speciation event

The common ancestor of species B and C

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

condensation. good luck!

nb

explanation:

kj

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.