What does tumultrous mean? A. rough and uncertain B. calm and peaceful C. fun and exciting D. full and boring

Uranium is a mineral which is used to generate electricity. predict and explain the long term effect on the environment of obtaining and using uranium as a source of energy.

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

Which of the following east asian contries are a peninsula? a. china b. taiwan c. south korea d. mongolia