Soil and Agriculture Answers

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Genetically modified foods can contain genes from different, unrelated organisms.

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Which of the following is the most damaging method of soil remediation?

soil excavation and disposal

soil aeration

heating and vapor extraction

microbial digestion

Field patterns are the same in all parts of the world.

The high productivity of American agriculture is exemplified by _______.

low crop yields per farm worker

high crop yields per farm worker

the small cultivated area per inhabitant

the small cultivated area per farmer

Contour farming is a method for plowing across the slope of steep hills.

Which of the following is not an agricultural technique?

irrigation

selective breeding

livestock herding

none of the above

How does flooding rice fields reduce the need for herbicides and pesticides in rice farming?

While rice has a submerged growth state, most weeds and pests do not.

Flooding the fields causes the soil to degrade so weeds cannot take root.

Residual herbicides and pesticides from previous seasons dissolve in the water.

All of the above

Crop rotation is a method of soil conservation because _______.

the land produces more than one type of crop

it requires plowing and tilling that reduces soil compaction

it does not use the same parcel of land in sequential seasons

it avoids the depletion of soil nutrients

Victory gardens were used in World Wars I and II to augment the public food supply and aid the war effort.

What is the purpose of strip cropping?

prevent soil erosion

maintain nutrient levels

reduce plant disease

all of the above

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