The spanish built presidios in order to

a. protect missions from attack.

b. serve as mission churches.

c. provide centers of government.

d. act as trading centers.

Which can be used to control the salinity of soil? A) terrace farming B) contour farming C) planting of cover crops D) plowing and turning of soil E) humic acids

As Europe's forests have been cleared, what have they been turned in to

Earthquakes in California are Choose one: A. always above magnitude 7.5, because the San Andreas is such a large fault. B. the result of widening along the San Andreas fault, which will eventually cause western California to sink into the ocean. C.

The weather department in Richmond is forecasting a snowstorm. What is likely to happen to the barometer and thermometer readings in Richmond?

Wind blowing sediment against the rock or land area, or sand blasting is called

Which two countries and a neighboring territory have the lowest population density in latin america?

The distance from the earth to the sun is known as: A. a light year B. an astronomical unit C. one million miles

Early cities often were dangerous places to live. Some of the hazards were environmental, while others were caused by human behaviors. In a brief paragraph, explain which of the hazards facing early cities you think was the most dangerous.

Stonehenge was erected by very large stones called

What is the function of bioreactors