Which is the best definition of air pressure? A. the amount of water vapor in the air.

B. the weight of the air pressing on everything in the environment

C. the amount of precipitation in a certain area

D. the type of clouds in the atmosphere

Jewelweed, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. these structures are favorable because they a. can cause genetic changes to occur. b. prevent germination within the seed pod. c. aid in the dispersal of the species. d. attract insects that aid in pollination.

Ihat will happen if i added baking soda to vinegar

Calculate the number of moles of ethane in 100 grams