How does air pressure control expiration? A decrease in air pressure within the lungs allows air to flow in. An increase in air pressure within the lungs allows air to flow out. A decrease in air pressure within the lungs causes them to contract. An increase in air pressure within the lungs causes them to expand.

Pls ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.

Easy 6th grade work! 100 points! i need fast! compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?