It is really earth space science

1.
when organisms give off waste or decompose back in to the are both released back into the soil.:
when organisms give off waste or decompose back in to the are both released back into the soil.
2.
this plants grow. it is often used in fertilizers for farming and also for house holds in lawn care.:
this plants grow. it is often used in fertilizers for farming and also for house holds in lawn care.
3.
this is used by cells and living things to produce enzymes:
this is used by cells and living things to produce enzymes
4.
ammonia is a product of bacteria. plants and bacteria are able to utilize this type of:
ammonia is a product of bacteria. plants and bacteria are able to utilize this type of
5.
animals get this by consuming plants, other animals:
animals get this by consuming plants, other animals
6.
this is used by cells and living things to produce an important structure within the dna molecule.:
this is used by cells and living things to produce an important structure within the dna molecule.
7.
bacteria takes this in from the atmosphere (plants and animals cannot obtain it, for use, from the atmosphere):
bacteria takes this in from the atmosphere (plants and animals cannot obtain it, for use, from the atmosphere)
8.
this increases in availability as more land becomes exposed and eroded. through mining, construction, industrial or agricultural use.. humans are increasing the amount.:
this increases in availability as more land becomes exposed and eroded. through mining, construction, industrial or agricultural use.. humans are increasing the amount.
9.
for plants, a major source of this is available in the soil in the form as nitrates:
for plants, a major source of this is available in the soil in the form as nitrates
10.
is not found in the atmosphere, but is found in the land, living things, and the water.:
is not found in the atmosphere, but is found in the land, living things, and the water.
11.
animals get this by consuming plants, other animals, or drinking water:
animals get this by consuming plants, other animals, or drinking water
12.
this is used by cells and living things to produce nucleic acid.:
this is used by cells and living things to produce nucleic acid.
13.
plants are able to absorb this through their roots. it is available to them in both soil and water. their cells use this for energy and the formation of dna:
plants are able to absorb this through their roots. it is available to them in both soil and water. their cells use this for energy and the formation of dna
14.
this is used by cells and living things to produce amino acids for the assembly of proteins:
this is used by cells and living things to produce amino acids for the assembly of proteins
15.
this erodes from rocks:
this erodes from rocks
16.
this is an important part of energy that cells use (atp):
this is an important part of energy that cells use (atp)
17.
this often ends up on the bottom of hydrosphere reservoirs:
this often ends up on the bottom of hydrosphere reservoirs
18.
without bacteria, algae, this would not be in a usable source for plants or animals.:
without bacteria, algae, this would not be in a usable source for plants or animals.

a. phosphorus
b. nitrogen
c. nitrogen / phosphorus