Most of the wheat, rice, and corn raised in the world has resulted from genetic engineering of one sort or another, either by crossing certain varieties or deliberately transferring genes using transgenic techniques.
These methods select for plants that produce their own defenses against pests with chemicals or physical barriers. Helping to feed the world, this represents an example of A) cultural control.
B) natural enemies control.
C) genetic control.
D) natural chemical control.
Question 2
In 1910, President Theodore Roosevelt said I recognize the right and duty of this generation to develop and use the natural resources of our land; but I do not recognize the right to waste them, or to rob, by wasteful use, the generations that come
after us. His message best reflects A) an argument for economic growth.
B) a plea for good stewardship.
C) an argument against sustainable agriculture.
D) a philosophy in conflict with Rachel Carson's.
World Ecosystem
At breakfast, a middle-class husband sits absorbed in the newspaper and the public affairs of the da
A member of the Uru-Eu-Wau-Wau tribe in Brazil. The way of life of the world’s few remaining rain ...
White and yellow rice
A partial genetic map of the four chromosomes of Drosophila melanogaster