Use the salamander cards to model how speciation may have occurred from a single ancestral species, as populations spread around California's long Central Valley. Describe your model as a sequence of steps that account for how each species could have become reproductively isolated. help me please ​

What is the name of the two satelites on mars

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.