the light of proxima centauri takes about 4.22 years to reach earth suggesting that its distance from earth is what?

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?