All else being equal, what happens to the velocity of water flowing through a river channel when the cross-sectional area decreases?

Earth’s secondary atmosphere was mostly composed of carbon dioxide and water vapor. After the formation of the oceans, the atmosphere was mostly composed of nitrogen and carbon dioxide. Describe how the formation of the oceans altered the composition of the atmosphere.

Which of the following shows the correct evolution of plants during the Paleozoic?

Humans existed during the same time period as dinosaurs.

In unconfined aquifers, water will flow from regions of to regions of

In general, where is the flow along a glacier fastest?

What shape typifies valleys carved through glacial processes?

Place the events in order from youngest (6) to oldest (1).

What happens to the competence of a river if the velocity of water flowing in the river increases?

You are attempting to determine the age of a sample and find that the sample has a parent to daughter isotope ratio of 1:3. In other words, 25% of the original parent isotope is remaining. How many half-lives have occurred?