what are the two phases of the respiratory movement of man? Are they the same in a grasshopper or a fish? PLEASE

If water were a non polar molecule, how would its properties be different ? a.) water would be a much lighter molecule b.) water would be able to climb up inside plants c.)water would not be able to form hydrogen bonds d.) water would stick together much more strongly

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

What percentage of light hits earth's surface directly?