B- Back into it's original medium.
Hope this helps!
Pressure has inverse relationship with area of an object. The smaller the area is, more pressure it exerts. Increasing the sharpness of knife(decreasing its area), increases the pressure on an object i.e ability to cut increases on increasing the sharpness.
Hope this helps.
D= M÷V is the equation you're looking for. It means Density = Mass ÷ Volume
Answer:

Explanation:
As per given figure let say the tip of the shadow is at distance "x" from the base of the lamp
so here we have

so we have


now we have



Answer:
Cells
Explanation:
Non-living, it's atoms, but the smallest unit component that all living beings must have is the cell. In fact some living things can be just one cell. Every living being comes from cells, is made up of one or more cells, and cannot be considered a living organism without at least one.