Which of the following is a cost of mining aluminum from new bauxite deposits?
A. It requires a large amount of energy.
B. It can be recycled over and over again.
C. It takes less energy to transport this lightweight metal.
D. It helps preserve plants and animals in rain forests.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?