Which of the following statements is NOT true about groundwater? Groundwater can come to the surface by natural (non man-made) processes.

Groundwater aquifers can be replenished.

Groundwater cannot be contaminated.

Groundwater can stay in the ground for thousands of years.

In order from largest to smallest what are earths five main oceans

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks

Many rivers in central asia come from