At the very north of Europe there is a low population density, why is the population so low? (think climate )?

Uncle tom's cabin started out as a series of articles printed in the national era, a newspaper.

Both pictures below were taken at the same time of day, but one picture was taken in summer, and the other in winter. how can you tell which is in winter

Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays