How do we use radioactive dating to determine the age of a fossil, artifact, or rock layer?

Which event in the history of the americans with disabilities act is an example of a conflict between different levels and branches of government?

Which of the following was discovered in the piedmont region of north carolina in 1799?

The people of mozambique and zimbabwe would be most likely to be affected by a change in flow of which of these rivers? a) congo b) niger c) nile d) zambezi