6. Increasing light
This type of response is a main function of the -
A.
excretory system.
B.
circulatory system.
C.
endocrine system.
D
nervous system.

In saturated organic compounds, all the bonds between carbon atoms are called?

Is this correct if not can u correct me

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green