Answer:
Infra- means "below;" so the infrastructure is the "underlying structure" of a country, state, etc. and its economy, the fixed installations that it needs in order to function. These include roads, bridges, dams, the water and sewer systems, railways and subways, airports, and harbors.
I tried, hope this helps :)
People can apply for citizenship and receive a green card, get married to a U.S citizen, or have a parent who was born in the U.S
Answer: They do this through a process called "mutation".
It could also be genetic modification, depends on what your text or teacher teaches you tbh.
Nationalization is the transfer of a major branch of industry or commerce from private to state ownership or control.
How many people are living and to see if the population is growing .