Our bodies use nitrogen Question 2 options:

directly from the air

after bacteria make N into ammonia molecules

from the plants and other animals we eat

all of the above

it's the 1 and 3 I think it's that hopefully it's right

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

it is b that is the answer.