Organisms that must eat or consume other organisms to obtain energy are: O autotrophs
chemotrophs
o heterotrophs
xylotrophs
A AUTOTROPHS. B Chemotrophs C HETEROTROPHS. D XYLOTROPHS

the endocrine system secretes hormones into blood and other body fluids. these chemicals are important for metabolism, growth, water and mineral balance, and the response to stress. hormones provide feedback to the brain to affect neural processing. reproductive hormones affect the development of the nervous system.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

(nitrogen fixation) will be your answer sorry if im wrong