Answer:
Because most living things need sunlight
Explanation:
only few creatures can live without it
Answer:
In quiet breathing inspiration involves muscular contractions and expiration is passive.
Explanation:
Respiration process involves two different stages, inspiration - inhalation- and expiration - exhalation-.
During inspiration, the diaphragm <u>contracts</u> and goes down, while intercostal muscles also <u>contract</u> and go up. These actions enhance the size of the thoracic box and <u>reduce internal pressure</u>. As a result, air flows in and fills the lungs.
During expiration, the <u>diaphragm relaxes</u> and the volume of the thoracic box diminishes, which causes the <u>pressure inside to increase</u>. In consequence, the lungs contract and the air is expulsed outside.
Mitosis and cell division are possible in all human cells. Mitosis has several functions in the organism, including growth, cell repair, and some forms of reproduction. Humans make two types of cells. Body Cells and Reproductive Cells are two types of cells. Mitosis employs diploid cells to attack viruses and bacteria while also repairing cells.
Nitrogen fixation, N2 --> NH3+, is not something that plants to by themselves but some plants have bacteria that does this. I believe that pea plants have these, but I'm not 100% sure.
