The network of glands that release chemical messengers directly into the bloodstream is called the endocrine system. The endocrine system produces and secretes t<span>hese chemical messengers, referred as </span>hormones directly into bloodstream to transmit signals to appropriate part of body. The hormones regulate bodily functions like growth, metabolism, <span>tissue function, sexual function, reproduction, </span>sleep and mood.
ANSWER:
it is considered PHYSICAL HARM.
~batmans wife
the answer is the first one: by producing random changes in an organism's genetic code
A bilayer of phospholipids.
the mitochondria breaks down chemical fuel into packets of chemical energy that can power the cell