HELP ASAP Complete this sentence

If Volume remains the same while the mass of a substance , the density of the substance will ,

A, Increase, stay the same
B, decrease, stay the same
C, decrease, increase
D, increase increase

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

Yeast cells reproduce quickly by budding. this is a form of reproduction so all the yeast cells a) sexual; vary b) asexual; vary c) asexual; are identical d) sexual; differ from the parents submit hint structures and functions of cells cellular reproduction

Why are current extinctions of concern to enviromentalists?