Qué tipo de recurso es él cultivos de arroz

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

Can a trait be both polygenic and have multiple alleles? explain why or why not.