The ozone layer protects the earth from . A. carbon dioxide
B. acid rain
C. too much radiation
D. air pollution

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!

answer; somatic;

in addition to being able to metabolize, grow, digest food, and excrete wastes, what other functions must an organism perform if it is to survive? survival also depends on the ability to maintain one's boundaries, to move, to respond to stimuli, and to reproduce. oxygen is a survival need.

in tropical forests it typically is hot with a lot of rain. when what is hot, it starts to evaporate and turn into water vapor.