Which of the following statements best describes what is occurring in the land surrounding the sahara desert?
a.
desertification is increasing, and the desert is expanding.
b.
fewer people are trying to farm in this semiarid region.
c.
the desert is shrinking with the increased use of irrigation.
d.
increased urbanization has resulted in decreased deforestation.

The ethnic conflicts in darfur have led to an attempt to destroy a whole people known as

Match the term with the corresponding definition. 1. mountains 2. geographic position 3. latitude 4. oceans 5. pressure 6. land vs. water a. affects temperature by influencing the seasonal range of solar intensity b. despite being at similar latitudes, continental locations have a larger seasonal range in temperature than waterfront locations c. local topography predict temperature and precipitation d. thinner air less able to hold heat makes climate colder e. sea surface temperature influences air temperature and evaporation rates f. affects temperature, moisture, and storm tracks

Which of the following describes the relationship between elements of an ecosystem