human because plants breath carbine dioxide
All animals and plants. The air is 78% nitrogen.
nitrogen cycle
Plants use the decaying remains of animals for nutrients. Animals use plants for nutrients and air. Plants also need air in order to survive. Air uses plants to be produced. -CO
Nitrogen is one of the elements present in nitrates which is a mineral that plants need for growth. Nitrogen fixing soil bacteria take the nitrogen from the air and change it into ammonium, and then further changed by nitrifying bacteria into nitrates. these nitrates are then taken up by the plants.
Plants use the decaying remains of animals for nutrients. Animals use plants for nutrients and air. Plants also need air in order to survive. Air uses plants to be produced. -CO
It evaporates and recycles within the air. It is part of the weather cycle.
One resource that is constantly cycling through the environment is water. Another resource is air for plants and animals to breathe.
photosynthesis
when plants and animals respire, carbon is returned to the air as carbon dioxide, and humans then beathe in the same carbon dioxide that was placed into the air by the decomposed plants and animals.
From plants or air.
Animals are useful for plants bacause tja e plant needs carbon in night and animals do need
Carbon Cycle