Executive branch responsibilities in policy implementation
The correct answer is B. Southern Africa and Russia.
These two parts of the world are the most abundant when it comes to diamond resources, and they export a large part of it in order to get profit. Countries such as Botswana and the Democratic Republic of Congo in Southern Africa are some of the places where you can find a lot of diamonds, apart from Russia.
#3: A should be your answer
When exercising, your body needs more oxygen.
I believe the answer is a cutaway drawing/cutaway diagram
