Start with the one that you know better the beginning of essays are hakf the tine awkward anyway.
It means that the organism does not require air (oxygen) to live
Because the sun adds light to the clear bubble
Answer:
Nitrogen is an essential nutrient for plants and a significant component of proteins, which all animals need to grow, reproduce and survive. The nitrogen cycle converts nitrogen into compounds that plants and animals can use. Humans and Animals Need Nitrogen All human tissue – muscles, skin, hair, nails and blood – contains protein.
