Scientists use the amount of radioactive isotopes found in rock and fossils to calculate their ages. This process is called what

Which of the following best describes the location of sub-Saharan Africa? A. the part of Africa that extends out into the Indian Ocean B. the part of Africa that includes the Sahara and the Sahel C.

What is the national animal of Paraguay?

Which type of plates slide past each other in opposite directions

Sunrise today in Oakland, CA, was at 7:15 a. m. Would you expect sunrise to be earlier or later in Nevada? Why?

Do you think all rock weathers and erodes are the same?

Which of the following type of ceramics is used for making bricks? a) porcelain b) stoneware c) earthtenware

Which of the following is not a process of a stream load? A. Bed Load B. Materials in solution C. Divide D. Suspension

In the southwest which mountainas stretch across the isthmus that separates the black and caspian seas?

How has the policy of eradication affected rainforests

Which statements about fresh water and salt water are true? Check all that apply. 1. A pond is a source of salt water. 2. Fresh water is essential to all life on Earth. 3. Half of Earth's water is fresh water. 4.