In the Central African Republic they might clear existing forests and burn the plants there to create more farm land. This is an example of what kind of agriculture?
A) clearance.
B) desertification.
C) rechurn.
D) slash-and-burn.
E) sustainable.
Question 2
When India takes steps to strengthen its military, its neighbor and rival Pakistan feels that it must take similar steps. The end result is that both states have more powerful militaries but are also less secure than they were before. This is an example of
A) collective security.
B) mutual assured destruction.
C) political sovereignty.
D) security dilemma.
E) territorial integrity.
Polyploidy has been an important factor in the evolution of plants.
Plants
The “Infertility Belt” In certain countries in Central Africa, infertility rates are as high as 30%
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
Plants
Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plan