sentences: angstrom is when an tail maintains a moving internal fruits & the amount of sugar in blood is a part of an animal 's internal environment ->  an example of regulation is controlling the amount of sugar in an animal's blood  if something releases something else then that something is the source of that something else & the bacteria powder is a sink of barometer -> the endocrine system releases hormones the endocrine system releases hormones  the endocrine system releases hormones & chemistry regulate mind bicarbonate -> hormones are released to regulate body functions hormones are released to regulate body functions  wood are released to regulate mind roof & an example of regulation is regulating body functions -> hormones are released for regulation hormones are released for regulation  hormones are released for regulation & humidity is a mean of returns -> insulin can be released for regulation insulin can be released for regulation  an nation of directions is controlling the organic of salt in an animal's bone & insulin can be released for regulation -> an example of regulation is insulin being released to control the amount of sugar in blood