Question 1

Creating stability in the worldwide supply of food will never occur until

Accepted Answer

A)  the size of the human population is also stabilized. 
B)  all available cropland is put into full production. 
C)  people are more evenly distributed across Earth's surface. 
D)  All of the above

Question 2

Plant breeders are attempting to develop new varieties of grass pea with much lower levels of toxins in them.

Accepted Answer

A) True 
 B)False

Question 3

Although an individual may consume enough calories, without the proper mineral nutrients malnutrition can still exist. The best solution for mineral malnutrition is to

Accepted Answer

A)  increase the amount of animal protein in people's diets. 
B)  increase the amount of marine fish and shellfish in people's diets. 
C)  develop and distribute crops that provide better mineral nutrition than those currently used. 
D)  increase the amount of synthetic vitamins in people's diets.

Question 4

Which of the following is not true?

Accepted Answer

A)  Planting genetically uniform crops makes them more vulnerable to diseases and pests. 
B)  Planting diverse crops makes them less vulnerable to widespread disease but more vulnerable to pests. 
C)  Planting a crop that consists of a single high-yielding genetic variety has its dangers. 
D)  Planting diverse crops makes them less vulnerable to widespread disease and less vulnerable to pests.

Question 5

Areas where domesticated animals such as sheep and cattle can roam and graze are called _________.

Accepted Answer

The answer of Areas where domesticated animals such as sheep...

Question 6

In today's world which of the following is not a major method of improving crop yields?

Accepted Answer

A)  preserving crop diversity 
B)  genetic engineering 
C)  irrigation 
D)  plant breeding

Question 7

One major impediment to reducing malnutrition is

Accepted Answer

A)  an insufficient amount of pastureland devoted to beef production. 
B)  the overutilization of artificial fertilizers and insecticides. 
C)  the current systems used for the distribution of food. 
D)  the failure of aquaculture to provide sustainable products.

Question 8

About half of the 40,000 deaths caused each day by malnutrition are children.

Accepted Answer

A) True 
 B)False

Question 9

The conversion of grain to animal live weight is not equally efficient for all herbivores. It requires 3.5 times more grain to produce a kg of beef than poultry. What best explains this difference?

Accepted Answer

A)  The hide and bones of cattle weigh much more than the bones and feathers of a chicken or turkey. 
B)  Cattle are individually large animals while poultry are much smaller. 
C)  By having feathers poultry are better insulated and expend less energy staying warm than cattle. 
D)  Digestive efficiency and stress from overcrowding in feedlots differs among domesticated animals.

Question 10

Although billions of people are malnourishment many countries are struggling with an epidemic of obesity; for example, 65 percent of all adults in Egypt and Mexico are overweight. How can such obesity be explained?

Accepted Answer

A)  Worldwide consumption of meat has increased by 20 percent in the past decade. 
B)  The growth of aquaculture, whose animal live weight equivalents require the greatest amount of grain to produce. 
C)  Much of the world is shifting its diet away from fish and meats to grain crops that are high in starchy carbohydrate. 
D)  Global marketing has introduced many inexpensive and unhealthy types of processed foods like sweetened carbonated beverages.

Question 11

Evaporation of water both dehydrates any crop and removes nutrients from soil.

Accepted Answer

A) True 
 B)False

Question 12

Drip irrigation focuses the use of water directly to the crop, reduces operating costs, and can reduce growth of weeds.

Accepted Answer

A) True 
 B)False

Question 13

Soil erosion and nutrient loss always occur together.

Accepted Answer

A) True 
 B)False

Question 14

A farm can be thought of as an ecosystem.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is true?

Accepted Answer

A)  Seeds are an aspect of farming that does not require the input of energy. 
B)  Irrigation does not require energy. 
C)  Organic farming consumes less energy than precision farming. 
D)  Fertilizing doesn't require energy.

Exam 44: Feeding a Hungry Planet

Creating stability in the worldwide supply of food will never occur until

Plant breeders are attempting to develop new varieties of grass pea with much lower levels of toxins in them.

Although an individual may consume enough calories, without the proper mineral nutrients malnutrition can still exist. The best solution for mineral malnutrition is to

Which of the following is not true?

Areas where domesticated animals such as sheep and cattle can roam and graze are called _________.

In today's world which of the following is not a major method of improving crop yields?

One major impediment to reducing malnutrition is

About half of the 40,000 deaths caused each day by malnutrition are children.

The conversion of grain to animal live weight is not equally efficient for all herbivores. It requires 3.5 times more grain to produce a kg of beef than poultry. What best explains this difference?

Although billions of people are malnourishment many countries are struggling with an epidemic of obesity; for example, 65 percent of all adults in Egypt and Mexico are overweight. How can such obesity be explained?

Evaporation of water both dehydrates any crop and removes nutrients from soil.

Drip irrigation focuses the use of water directly to the crop, reduces operating costs, and can reduce growth of weeds.

Soil erosion and nutrient loss always occur together.

A farm can be thought of as an ecosystem.

Which of the following is true?