Answer:
Yes. Cells have 'cell receptors' that are used to receive messengers like hormones to communicate. Cell receptors have specific shapes that fit the shape of the messenger that they want to receive. Organs like the pancreas send our these messengers to the cells to order them to do different functions.
Answer:
62°F (17°C) to -60°F (-51°C) at the tropopause.
A mathematical model of a food web helps you better understand portions, and track the structure of how the web is flowing. The food web could also help because it helps predict things.
Striated muscle, connective tissue (tendons, fascia, blood) nerve tissue all can be found in muscle tissue .Connective tissue, Epithelium, Muscle tissue, Neural tissue.
For an atom to become a positively charged ion it must lose negatively charged electrons.