Which medication is used in mares to suppress estrus, for estrus synchronization, and to maintain pregnancy?

The series of transgressions and regressions that produce cyclothems were likely produced by

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

Ture or false evidence for evolution includes millions of fossils