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WorksheetsAgriculture and Land
Total questions: 17
Worksheet time: 12mins
Name
Class
Date
1.
Malnutrition is caused by
a)
Not having enough to eat
b)
Eating too many things
c)
Being able to use food in a different way
d)
Drinking too much water, which flushes out the nutrients.
2.
How do pesticides that regulate growth work?
a)
They attract predators of the pest.
b)
They disrupt the pest's life cycle
c)
They allow crops to recover from pests and grow faster.
d)
They cause pests to stop growing so that they stay too small to cause damage.
3.
Pollutants that are used in agriculture and landscaping and may cause nerve damage, birth defects, and cancer in humans are
a)
Asbestos
b)
GMO's
c)
Pledge
d)
Pesticides
4.
Almost all environmental problems can be traced back to two root causes. What are they? Choose one.
a)
a) People are using up, wasting, or polluting many natural resources faster than they can be renewed, replaced, or cleaned up.
b)
Cows are messy.
c)
Private property allows individuals to tightly manage their own resources with no regard to others.
d)
The cost of environmental solutions is too low.
5.
_____________["Old" or "Young"] mountains are smoother.
a)
Old
b)
Young
6.
Scientists and farmers use ____________ to modify living cells in crops so that they can be more resistant to pests and herbicides.
a)
selective cutting
b)
Tetanus
c)
genetic engineering
d)
Organophosphates
7.
This is an example of
a)
selective cutting
b)
strip mining
c)
ranching
d)
clear cutting
8.
This is an example of
a)
selective cutting
b)
clear cutting
c)
ranching
d)
strip mining
9.
Benefits of GMO crops include
a)
lower cost, keep coming back each year to grow, no problems
b)
slower growth, increased insects, an decreased plant defenses
c)
Less water to grow, resistant to pests, resistant to disease
d)
increased profits to seed companies, happier farmers, and happy plants.
10.
Most of the cases of pesticide poisoning occur in people who are
a)
applying the chemical to crops.
b)
eating fruits and vegetables with chemical residues.
c)
inhaling the chemical while working on tractors.
11.
What cycle is directly affected when rocks erode and enter soil and water?
a)
Water
b)
Phosphorus
c)
Oxygen
12.
Regardless of where people live, they depend on resources produced in
a)
wilderness areas
b)
rural areas
c)
urban areas
13.
The National Farmland Protection Program was designed to
a)
protect farmland from environmental damage resulting from pollution.
b)
protect farmland from damage by wild grazing animals that are destroying crops.
c)
protect farmland from being overtaken by natural grasses and weeds.
d)
protect farmland from being developed into cities.
14.
What were the benefits of the "green revolution"?
a)
It reduced the price of food and improved the lives of many people,
b)
It increased the amount of organic foods available in markets and reduced the cost of production.
15.
The following example illustrates a __________ feedback loop.
The control of blood sugar (glucose) by insulin is another good example of a negative feedbackmechanism. When blood sugar rises, receptors in the body sense a change . In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels.
The control of blood sugar (glucose) by insulin is another good example of a negative feedbackmechanism. When blood sugar rises, receptors in the body sense a change . In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels.
a)
positive
b)
negative
16.
The following example illustrates a __________ feedback loop.
Normal human body temperature is approximately 98.6°F. When body temperature rises above this, two mechanisms kick in the body begins to sweat, and vasodilation occurs to allow more of the blood surface area to be exposed to the cooler external environment. As the sweat cools, it causes evaporative cooling, while the blood vessels cause convective cooling.
Normal human body temperature is approximately 98.6°F. When body temperature rises above this, two mechanisms kick in the body begins to sweat, and vasodilation occurs to allow more of the blood surface area to be exposed to the cooler external environment. As the sweat cools, it causes evaporative cooling, while the blood vessels cause convective cooling.
a)
Positive
b)
Negative
17.
The following is an example of a ______ feedback loop:
Once an apple is ripe, it gives off a gas known as ethylene (C2H4) through its skin. When exposed to this gas, the apples near to it also ripen. Once ripe, they too produce ethylene, which continues to ripen the rest of the tree in an effect much like a wave.
Once an apple is ripe, it gives off a gas known as ethylene (C2H4) through its skin. When exposed to this gas, the apples near to it also ripen. Once ripe, they too produce ethylene, which continues to ripen the rest of the tree in an effect much like a wave.
a)
Positive
b)
Negative
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