Which of the following correctly explains how air exerts pressure on us? the molecules in the air located above us are pulled down towards the earth by gravity, causing a downward pressure on objects below. the normal force produced by the earth against our bodies causes the air to be pressurized. the difference in the amount of air outside and the amount inside of our bodies creates air pressure. the strength of molecular bonds between air molecules is greater than the strength of bonds between molecules in our bodies, creating pressure.

How much energy is made when a pice of wood burns. how do you know

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Convert .347 kilometers to miles show your work