Explain why lack of diversity in food crops might present problems for the world food supply

What will be an ideal response?


Due to genetic engineering of crops, there is little biodiversity in cash crops such as rice and corn. This allows pathogens to attack large percentages of a crop population because there is not enough genetic diversity for a pathogen-resistant crop to be in the population. The result of this could be widespread crop losses that could lead to a significant strain on the world's food supply.

Environmental & Atmospheric Sciences

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What process forms rocks with porphyritic texture?

A) quick cooling above ground B) slow cooling below ground C) a mixture of quick and slow cooling as rock moves from a warmer environment to a cooler one D) slow cooling combined with pressure underground

Environmental & Atmospheric Sciences

Sustainability ________

A) is impossible to accomplish B) is possible given our increased use of fertilizers and technology for agriculture C) is beyond our current technology and attitudes D) ensures an economy that will decline over time E) involves using resources without compromising future availability

Environmental & Atmospheric Sciences

Oneida, New York, and New Harmony, Indiana, began as

A) communal agriculture. B) utopian settlements. C) Quaker settlements. D) centers for the suffrage movement. E) Baha'i houses of worship

Environmental & Atmospheric Sciences

According to the 1872 General Mining Law, miners can stake claim anywhere on public land, but must pay __________ per acre to take the minerals they find.

A. less than US $5.00 B. US $50.00 C. US $500.00 D. US $5000.00 E. None of these, miners do not have to pay anything, they just have to lay claim to the land.

Environmental & Atmospheric Sciences