Jenny is running for more than an hour on a pleasant sunny morning. Her body is sweating to maintain homeostasis, which is caused by the action of a/an (blank). Options: control center, effector, sensor, transmitter.

Which type of food have a high amount of nutrients relative to the number of calories

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.