How is food production affected by population growth in Sub-Saharan Africa?
What will be an ideal response?
Answer: Since 1961, food production has increased substantially in Sub-Saharan Africa, but so has population. Sub-Saharan Africa is struggling to keep food production ahead of population growth. As a result, food production per capita has changed little in a half-century.
The threat of famine is particularly severe in the Sahel. Traditionally, this region supported limited agriculture. With rapid population growth, farmers overplanted, and herd size increased beyond the capacity of the land to support the animals. Animals overgrazed the limited vegetation and clustered at scarce water sources, leading to the depletion of the limited water resources.
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Increasing which of the following will increase the pH of a buffer made using acetic acid and sodium acetate?
A) the amount of water present B) the [C2H3O2-] C) the [HC2H3O2] D) both the [C2H3O2-] and [HC2H3O2]
Instructions: Choose one answer from each pair of selections. In most tropical regions, the seasons are marked by differences in TEMPERATURE | PRECIPITATION
Which of the following is true of all glycerophospholipids?
A) Their fatty acids are all saturated. B) Their fatty acids are all unsaturated. C) There is always a saturated fatty acid bound to carbon 2 of glycerol. D) There is always an unsaturated fatty acid bound to carbon 2 of glycerol.
The pressure gradient force has a direct effect on horizontal wind movements
a. True b. False