19. Which statement about epithelium is correct? It traps dust, pollen, and other particles.
It is thin tissue that lines the alveoli
It closes the windpipe when swallowing
It warms and humidifies inhaled air

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

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