Which of the following is not one of the three types of physical processes that can cause weathering?
a. biological
b. cultural
c. chemical
d. physical

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

The vegetation that thrives in the tundra is limited to a. mosses, barley, wheat, and corn. b. coniferous trees. c. dwarf shrubs, mosses, lichen, potatoes, and beans. d. mosses, lichen, algae, and dwarf shrubs.

Which topic would a meteorologist most likely research? -meteors in space -marine ecosystems -atmospheric conditions -the runoff of stream systems