Answer:
Making farm land (agriculture), terraforming (so we can build homes etc.)
Answer:
number of people supported by the working class
Explanation:
The dependency ratio is a measure of the number of dependents aged zero to 14 and over the age of 65, compared with the total population aged 15 to 64
It’s very blurry I can’t see
I’m not entirely sure what is being asked here, but the Tigris and Euphrates rivers is the only place in Egypt (besides the nile delta) with non-arid ground. That’s why most people live around there:
Grassy plains because most of africa's plains have less trees than grass
