Select the correct answer from each drop-down menu.

How can you reduce air pollution arising from transportation?

Use

Avoid

because they emit relatively less pollution

to reduce the emission of pollutants.

Why do you think water is so important to living things

In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a.the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules