8. a stroke is a sudden loss of brain function. it results from a lack of gas exchange with brain tissue, which occurs when the supply of blood to the brain is blocked. a stroke most likely results because of a problem in the system.

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