Despite increased agricultural production by developed countries about 100 years ago, less developed countries continued to use traditional agricultural practices. Then, in the 1960s, the research of Dr. Norman Borlaug increased crop production by nearly 500% in Mexico and India by using __________.
a. modern farm equipment
b. disease resistant crops
c. high yielding crops
d. All of the above responses are correct.
Answer: d. All of the above responses are correct.
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The Bering Land Bridge connected ____ and ____
a. North America; Asia b. Asia; Europe c. Europe; Africa d. North America; South America e. Asia; Australia
The only energy source(s) from ocean water so far put into commercial production are ________
A) OTEC and ocean wave generators B) tidal and OTEC generators C) tidal and ocean wave generators D) tidal electrical generators E) OTEC
Which biome is diagrammed in the accompanying figure?
A) boreal forest B) desert C) chaparral D) tropical savanna E) tundra
What is the difference between hard water and soft water? What problems could each type cause in your home?
What will be an ideal response?