Unit 8 Practice #2

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Unit 8 Practice #2

Checking for Understanding

Composting is a process that produces *

useful plastic products

a nutrient-rich soil conditioner

manure

loamy soils

acidic soils

Which biomes would you most likely not find a O horizon? *

Grassland

Temperate deciduous forest

Temperate rain forest

Tropical rain forest

Desert

One potential benefit of using genetically modified foods is *

the improved yields of crops

the release of unwanted genes to other plants or animals

their growth in monoculture will reduce biodiversity in the area

unknown effects on the ecosystem into which they are released

the potential greater need for fertilizers

Which of the following is disadvantage of fish farming? *

It can produce large volumes of fish for food

It can allow for genetic engineering, which leads to bigger yields

It is very profitable

It can lead to large die-offs to disease

It can reduce the pressure to harvest wild species

Acid deposition on soil kills beneficial decomposers; which of the following cycles would be most affected by the loss of decomposers? *

Phosphorus cycling

Hydrologic cycling

Temperature cycling

Nitrogen cycling

Potassium cycling

Which of the following best describes the use of DDT? *

It supplies needed nitrogen to plants

It kills weeds and unwanted plants

It is a pollutant released by automobiles

It is a chemical added to acidic soils to increase soil pH

It is an insecticide

Which of the following is an example of maricultrue? *

Salmon farming

Trout farming

Catfish farming

Tilapia farming

Aquaponics

Which of the following is NOT an environmental impact caused by pen farming in the ocean? *

Waste from cage culture causing unwanted algal blooms

Escaped farmed hybrid fish out-competing wild fish for food

Parasites, such as sea lice, impacting native populations outside the cages

Escaped genetically modified fish causing genetic pollution

Consistent supply of fish for food consumption

Which of the following cannot be used if you want your food products certified as organically grown? Check all which apply. *

chemical pesticides

inorganic fertilizers

animal manure from a CAFO

sludge from a waste treatment plant

genetically modified organisms

green manure

intercropping

biological pest control

synthetic insecticides

Required

Challenge question: The shrinking of the Aral Sea and the ecological disaster that followed was mainly caused by *

withdrawing groundwater from the area

the loss of riparian zones around the area

the massive use of pesticides

the diversion of the sea's two feeder rivers for agricultural use

a major earthquake that hit the area

Last name *

First name *

Email address *

Class period *

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