Differences and similartries between trp operon and lac operon

The function of the excretory system is to control homeostasis and

Me.henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to

Which does not describe a physical change happening to water? water evaporating in the sun water reacting with nitrogen gas water freezing and being broken apart with a knife water heating up on a stove