Chapter 9- Food, Soil, and Pest Management

One out of every nine people in the world is not getting enough to eat.

• true

• false

A diet lacking macronutrients leads to health problems, whereas a diet lacking micronutrients does not.

• true

• false

Compared to other nations, Americans spend the highest percentage of their disposable income on food.

• true

• false

Today’s monoculture systems for producing food focus on yield rather than the health of the soil.

• true

• false

The enormous gains in crop yields brought about by green revolution technologies may soon stop because green revolution technologies are degrading the quality of the soil that they use.

• true

• false

Topsoil is eroding faster than it forms on approximately one-third of the world’s cropland.

• true

• false

Irrigation accounts for 70% of the water used by humans.

• true

• false

Critics of genetically modified foods point out that GMOs are much less nutritious than natural foods.

• true

• false

Natural pest control is an example of a free ecosystem service.

• true

• false

Insecticides and pesticides can kill some of the predators and parasites that naturally help to control pest populations.

• true

• false