In which area does clean drinking water present the biggest problem?

A) cities in LDCs

B) polar regions

C) tropical regions

D) urban areas in MDCs

Greek mythology was based on: A Monotheism B Christianity C Matriarchy D Polytheism

When the continents separated, some of the same species ended up on different continents this was due from a. geologic time c. plate tectonics b. evolution d. natural selection

What was the book called that was a collection of Confucian ideas?

Predict how you believe an extreme change in climate might affect the process of natural selection in a species with little genetic variation.

As you saw in part c, stellar parallax exists only because earth orbits the sun. therefore, if the ancient greeks had measured stellar parallax, they would have known that their belief in an earth-centered universe was wrong.

Will climate change will result more or fewer landslides or there be about the same number as now?

When lava cools, it forms a hard rock. True or false?

The total process that turns sediment into rock is called perrifaction, lithification, or metamorphesis?

Renewable resources: A. have finite supplies that will one day be used up. B. include iron, gas, and copper. C. are all living resources. D. can be replenished over months, years, or decades.

A supernova results in a massive