enviro test
A farmer is concerned about the growth of the crops because their water supplies are running low. The farmer is worried about eh evaporation of excess water and wants to ensure their crops are getting enough water to grow. The farmer is prepared to meet any cost if t means long-term success. Which of the following irrigation types will be best for the farmer
Drip irrigation
which of the following is TRUE about the improved use of rangelands in the western United States since the 1990s
Rotational grazing is used so cattle do not damage sensitive vegetation near riparian areas, thus protecting watersheds
One of the main water pollutants of the surface water in the mid-atlantic region is acid mine drainage. Which of the following would be the most effective strategy for neutralizing the acidity of the contaminated surface water?
The addition of limestone to the surface water
a farm's soil is its lifeblood. if the topsoil is eroded, it can reduce the farm's productivity. Which agricultural technique is the least effective for reducing the erosion of a farmer's field?
The farmer can practice crop rotation
The green revolution has improved global agricultural output. Which of the following best described the author's perspective on the beginning of the green revolution in the 1970s and 1980s?
The green revolution was successful because of selective breeding, which improved nutritional value and crop yield to increase food production
which of the following best describes environmental damage caused by slash-and-burn farming in tropical rain forest?
The soil loses fertility after a short period of time and will be ineffective for farming use.
When a field becomes waterlogged, which of the following consequences could it have on the plants
They will die as they are unable to absorb oxygen through their roots
Which of the following agricultural practices results in soul degrading and most contributes to erosion?
Tilling
The green revolution refers to which of the following
a time when the farming practices switched in order to produce more food
Which of the following is the MOST-common method for harvesting bottom-dwelling species such as flounder and cod
bottom trawling
desertification can be caused by all of the following except
crop rotation
which of the following irrigation methods most efficiently uses water with the smallest percentage lost to evaporation
drip
Worldwide, the depletion of aquifers is becoming critical issue. Our agricultural practices require a dependable supply of water in order to get the high yields we have come to expect. Which type of irrigation conserves the most water
drip irrigation
which of the following is TRUE about saltwater intrusion
it describes the movement of salt water into coastal freshwater aquifers due to the increased hydraulic pressure of salt water and human-driven depletion of freshwater
the most common cause of salinization of agricultural soil over time is
overirrigation
land that are primarily used for the production of adapted, domesticated forage plants for livestock are known as
pastures
A crop of potatoes is damaged by a species called aphids which of the following would be a rapid approach to decreasing the crop damage while increasing crop yields
pesticides
The pesticides treadmill occurs when
pests evolve to develop resistance to pesticides over time, requiring farmers to use higher doses or develop new pesticides
All of the following are examples of tragedy of the commons except
redefining a country's borders to include more mountainous terrain
Which of the following is NOT a component of intergrated pest management
rotating the type of synthetic pesticide sprayed based on the temperature and humidity
The build up of salt in soil leading to a loss in crop productivity is called
salinization
The build up of salt in soil leading to loss in crop productivity is called
salinization
excessive extraction of groundwater within proximity to saline ecosystems can lead to
saltwater intrusion
Instead of cutting down entire forests or swaths of trees to harvest lumber, timber companies may institute a type of logging in which they move into an area and only cut certain trees
selective cutting
The process of removing mature trees in groups over many years and leaving many mature trees to reseed the area is known as
shelterwood cutting
Which of the following is NOT considered a sustainable agricultural practice
slash and burn
Which of the following is not a method that was ___ during the green revolution to increase food production
slash and burn techniques
all of the following are true of mining activities except
subsurface mining has more direct environmental impacts than open put mines
Urban environments put pressure on groundwater supply due to increased population size but also due to
the large surface area of impermeable surfaces
which of the following agricultural practices will accelerate cultural eutrophication
the use of fertilizers
each of the following describes a way to reduce an ecological footprint except
using energy sources that rely on fossil fuels
