How are most of the political bounderies of africa
created

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.

Does anyone know the answers for these

Which domain endings indicate websites that are most likely to be reliable sources? check all that apply. sites ending in .net