Natural gas
explanation:
solar power, coal, and petroleum are used to power things (i.e. produce electricity)
'The endocrine system<span> is made up of glands that produce and secrete hormones, chemical substances produced in the body that regulate the activity of cells or organs. These hormones regulate the body's growth, metabolism (the physical and chemical processes of the body), and sexual development and </span>function' According to Google.
Answer: Hydrogen
Explanation:
Because it is the element that everything is created with it is everywhere. All life has hydrogen in it, our air, SPACE, everything.
False - unicellular organisms like bacteria reproduce using binary fission