These factors cause environmental problems in sub-saharan africa. deforestation development integrated resource management negative population growth positive population growth (select all that apply)

Deforestation, certainly. I'm not sure what you mean by development... please elaborate. And, of course, positive population growth. Because of the minimal education in Sub-Saharan Africa, a lack of internal infrastructure like roads, hospitals, and water treatment plants, and little social institutions like health care, Sub-Saharan Africa has a high death rate as well as a high birth rate. It ranges from a 1 to a 2 or even 2.5 on the demographic transition model, depending on which area you are focusing on.

Deforestation and positive population growth I do believe. 

Why the planet stays in orbit is because of inertia (object stays in motion until a force changes it’s motion) also the atmosphere and gravity!

Icant awnser the qustion bc u have the planets not listed