What can you infer from this paragraph?
Some of the animals have fewer Carnegie stages
All of the animals undergo 23 Carnegie stages
All the animals are vertebrates
Some of the animals are vertebrates
Select 2 answers!

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

Explain the significance of the increased cell specialization of the volvocine line