Eli Whitney invented the cotton gin
Answer:
minerals
Explanation:
Rocks are identified primarily by the minerals they contain and by their texture. Each type of rock has a distinctive set of minerals. A rock may be made of grains of all one mineral type, such as quartzite. Much more commonly, rocks are made of a mixture of different minerals.
Answer:
C - Countries are increasingly independent for food supplies.
Explanation:
Clean energy sources will help the environment as well as the economy
The answer is either B or D. Letter A doesn't make sense and letter C isn't right either because you need rainfall to have fertile plains.
