Unit 8 Practice #2
Checking for Understanding
Composting is a process that produces
useful plastic products
a nutrient-rich soil conditioner
Which biomes would you most likely not find a O horizon?
Temperate deciduous forest
Temperate rain forest
Tropical rain forest
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?
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?
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.
animal manure from a CAFO
sludge from a waste treatment plant
genetically modified organisms
biological pest control
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
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