Which of the following is true about atmospheric pressure? a. it varies widely, depending on the weather. b. it increases with altitude. c. it affects the boiling point of a liquid. d. it is measured with a hydrometer.

What is impossible to do with a hypothesis

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles