The substances they need are carbon dioxide, water, and chlorophyll, and the substances produced by photosynthesis is 1 glucose molecule and 6 oxygen molecules
500 because of the 10% rule when moving up in food chains, for example; patch of grass-200J rabbit eats some of it but doesn’t eat all - 150J the rabbit runs around for a bit and loses energy, the fox doesn’t eat all of the rabbit - 50J ( just a rough example may not be completely right but the concept of the rule is there and the energy).
I know this answer by heart.It is the kidneys...
cancer cells are cells that divide and reproduce abnormally with uncontrolled growth... the stem cell theory of cancer proposes that among all cancerous cells, a few act as stem cells that reproduce and sustain the cancer, similar to normal stem cells normally renewing and sustaining our organs and tissues.
