These natural resources have made algeria, libya, and egypt very wealthy. select all that apply. gold natural gas petroleum salt

The correct answers are:

- gas;

- petroleum;

These three North African countries do not have a big variety of natural resources, instead they only have very few, but it is the most valuable ones on the global market, the petroleum and the natural gas.

All three are very rich in these two resources, especially Libya, and they had a crucial role into the development and economic progress of these countries, by bringing them enormous trade revenue.

the correct answer would be true friction causes the faults to slip or collide