How do you maintain homeostasis ?
acetylcholine, anandamide, dimethyltriptamine, dopamine, epinephrine, gaba, glumate, norepinephrine, oxytocin, serotonin

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

Which group is noted for the independence of gametophyte and sporophyte generations from each other? a) ferns b) mosses, hornworts, and liverworts c) charophytes d) angiosperms e) gymnosperms