Biology, 07.07.2019 05:30 sissy11145
As scientists have developed more productive crop varieties, farmers have switched from growing many traditional varieties to new high-yield varieties. for example, in peru, the indians once grew 500 native varieties of potatoes. that number has been reduced to about twenty major potato varieties, worldwide. why is it potentially dangerous to reduce the number of crop species in potatoes? a) it reduces the variety of crops available for human diets. b) it requires a larger investment than small farmers can make. c) it makes the overall crop more susceptible to pests or disease. d) it could reduce or cause the extinction of some predatory insects. submit
Answers: 1
Biology, 22.06.2019 05:30
Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor
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Biology, 22.06.2019 12:30
Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance
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As scientists have developed more productive crop varieties, farmers have switched from growing many...
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