What is the smallest unit in biology ?

A cell is the smallest unit of a living thing.

Cells

Explanation:

A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves