The Correct choice is C
<u>Demography</u> is the study of human populations and how they grow or decline.
Something that happen naturally, like a plant growing on its own is a natural occurrence
Answer:
what the question?
Explanation:
don't know what you need help
Condensation is when water vapour (a gas) turns into a liquid. This can be obverved on the outside of a glass and is also the process which forms clouds. If you yourself can observe condensation, it must be in the bottom layer of the atmosphere, the troposphere.
The river Thames, it flows through central London! Hope that help :)