Which of the following would be an example of a microclimate?
a. a valley
b. an ocean
c. north america
d. the tropics

Describe at least three examples of how people and wildlife have adapted to their environments in the middle east.

Why is immigration so important today?

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