Several population or species pairs of birds that reside and breed in North America were geographically isolated into eastern and western populations for tens of thousands of years during the Pleistocene glaciation. Due to post-Pleistocene warming and human landscape change since the 16th century, the breeding range of these populations/species have expanded and now overlap. If the formerly isolated species/populations readily breed, but the hybrid birds are sterile, what is most likely to happen

How was the climate when the ambulocetus was alive

Ture or false evidence for evolution includes millions of fossils

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey