Identify the choice that best completes the statement or answers the question. Over several years, a population of bats that inhabits a cave decreases. Which of the following factors could cause this decrease in bat population to occur? Choose the two that apply. -decrease in predators -competition for shelter -increase in food supply -infection by a fatal disease

This phrase from the declaration of independence and its primary author thomas jefferson can be used to justify which statement? a) jefferson thought this document could be used in his defense were he put on trial for treason. b) jefferson knew that the colonists' actions would have an international impact. c) jefferson believed that a bill of rights was necessary in the new government. d) jefferson was trying to show the king that the colonists were intellectuals.

The magnitude of an earthquake is typically calculated according to the scale.           a. mercalli   b. fujita   c. richter   d. saffir-simpson  

The ethnic conflicts in darfur have led to an attempt to destroy a whole people known as