When is there genetic drift in evolution?
a. when there is bottleneck
b. when there is directional selection
c. when there is high selective pressure
d. when there is male choice

Environmental differences within ecosystems are generally caused by

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

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