Which of the following statements is true? a. La Niñas occur much less frequently than El Niños do.

b. In normal conditions, winds push the warm waters of the tropical Pacific westward.

c. El Niños occur precisely every three years.

d. Both a and b

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

What was the great rift valley formed by