A source of microwaves is what?

Microwave sources include artificial devices such as circuits, transmission towers, radar, masers, and microwave ovens, as well as natural sources such as the Sun and the Cosmic Microwave Background. Microwaves can also be produced by atoms and molecules. <3

Microwave sources include artificial devices such as circuits, transmission towers, radar, masers, and microwave ovens, as well as natural sources such as the Sun and the Cosmic Microwave Background. Microwaves can also be produced by atoms and molecules.

Ok so let's eliminte some options

A populatin is not changing
this is untrue since the graph is growng (going up)

B. many factors to controll
we don't see a bumb or nick in the curve so I don't think that there is controll (exponential function)

C. population is growing unchecked.
I would agree with this option since it is just a curve without any bumps or nicks or going downs or wiggles

D. increased till it reached its carring capacity
if this was true, the graph would flatline at a certain point. this is not the case

the answer is C