During the last ice age, a __________ glacier covered much of the northern United States.

A meander that is cut off to become completely isolated from the main channel but that retains water is a(n)

Tributaries on sloping land surfaces establish a

A swamp, marsh, and bog are

What month are you LEAST likely to need an umbrella when you visit Thailand in Southeast Asia?

If one were to propose a new taxon of plants that included all the plants that are pollinated by animals, but excluded all plants that are not pollinated by animals, then this new taxon would be ________.

What type of desert is Simpson (in Australia), shown below? (For clarity, it is the one farthest to the right, far from the coast).

When aerosols capture water molecules in the air and then dissolve in the water to form microscopic droplets, __________ is produced, resulting in a decrease in overall visibility.

A biologist discovers an alga that is marine, multicellular, and lives at a depth reached only by blue light. This alga is most likely a type of ________.

Groundwater occurs only in