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A family of five recently replaced its 5 gallon per minute showerheads with water saving 2 gallon per minute showerheads. Each member of the family averages 8 minutes in the shower per day. In a 30 day period, how many fewer gallons of water will the family use with the new showerhead?

3600

Based on the data in the graph, which location showed an annual average grain yield in 1991-1993 that was approximately 2.3 times the yield in 1961-1963?

Asia

Corn can be grown at a rate of 1,000 kcal per hectare, and it takes 20 times more land to produce beef than it does to produce corn. Which of the following equations would correctly calculate the amount of land needed to produce 10,000 kcal of beef?

B

Long-term intensive agriculture that does not add soil amendments such as manure or fertilizer has been shown to decrease soil organic matter content. Which of the following figures best shows this relationship.

C

The table below shows fish harvest data from United States commercial fisheries in 2011, 2012, and 2013

C

It has been observed that forest fires can produce up to 40 percent of the mean annual global emissions of which of the following gases?

Carbon Dioxide

Which of the following is a commercially used method for harvesting trees and is most likely to lead to a fragmented landscape with serious impacts on biodiversity?

Clear cutting

The response describes one environmental problem that an urban community will likely experience if the forested sections of the local park were removed to build an indoor recreation center, such as one of the following

Decreased animal biodiversity leads to local food web/food chain disruptions

which of the following is the best illustration of the tragedy of the commons?

Depletion of fishing stocks in the North Atlantic

A new 450-unit housing development will replace several small farms on the outskirts of Fremont. The development will be composed of 1/4-hectare lots with nearly identical footprints, as show below. Storm water runoff from the new development into nearby Samel Creek will likely lead to which of the following?

Destruction of fish habitats by high levels of suspended soil..

Which of the following best represents the percent of water that is used for various purposes worldwide?

E

The graph shows worldwide catch or orange roughy, a type of wild caught fish, in tons, from 1977 to 2011. Based on the data in the graph, which of the following fishing practice solutions would best promote the sustainability of the orange roughy population?

Establishment of quotas on the number of orange roughy caught

Salmon farming threatens the health of wild salmon stocks primarily because

Farmed salmon can spread parasites and disease to wild salmon

The response identifies the land use practice that led to the greatest loss of tree cover in North America and explains the primary human benefits from the use of this practice, such as one of the following

Forestry in North America gives access to coal/natural gas/resources that can be extracted to increase domestic/export economic activity.

Which of the following best describes a disadvantage of using genetically engineered crops over crops that are not genetically modified?

Genetically engineered plants can decrease the genetic diversity of the crop.

A cost-benefit analysis done to investigate a proposed mine site would likely take which of the following into account? I. The medical costs of mine workers injuries. II. The cost of environmental restoration of the site when it is shut down. III. The value of the ore to be extracted from the mine

I, II, and III

Biological control methods for managing insect pests are effective for reasons that include which of the following? I. They promote genetic resistance in the target species, resulting in a population explosion of the target species. II. They generally focus on one target insect to ensure that the target insect population remains low. III. They can lead to a self-perpetuating population of a control species.

II and III only.

BOD

Increased localized temperature from an increase in pavement/decrease in tree cover shade

Switching from customary large-scale agriculture practices to which of the following is most likely to reduce the exposure of farmworkers and nearby residents to toxic chemicals?

Integrated pest management

Which of the following is true of the Ogallala Aquifier?

It underlies the United States High Plains and is being depleted

Which of the following actions would be most likely to increase the protection of ecological systems in national forests?

Mandate that the government sales of logging rights in nation..

Based on the data in the graph, which of the following Canadian cities had the lowest average per capita ecological footprint?

Ottawa

As part of a school project. a group of high school students will attempt to determine whether increasing the species diversity of the edible plants in pastures used for grazing livestock will provide an economic benefit to ranchers. Which of the following hypotheses, if supported by experimental results, best demonstrates an economic benefit to the ranchers?

Pastures with the highest diversity of plant species will have the highest net primary productivity.

Which of the following is the best example of an economic incentive that could be used to improve environmental quality and reduce resource waste?

Providing tax breaks

Which of the following actions would be most likely to increase the protection of ecological systems in national forests?

Providing tax breaks for companies that use recycled...

Based on the diagrams above, which of the following best explains how urban runoff could be decreased?

Replace traditional pavement with more porous pavement

The response describes one strategy that would be best suited to mitigate the effects of tree cover loss in regions where agriculture is the leading cause of tree cover loss, such as one of the following

Replant trees on agricultural lands that are no longer being used

Coal was surface mined from five sites, labeled 1 through 5, that had originally been covered by forest. Each site was planted with a mix of tree seedlings to reclaim the area to forest. Grass was also seeded over each site to prevent initial erosion and to provide forage. Ten years after planting, information was collected at the five sites and is given in the table below. Select the letter of the row that indicates the site with the most successful forest reclamation.

Row E

Which of the following problems is best addressed with contour plowing?

Soil erosion

A farmer observes that increasingly higher concentration of a particular pesticide have been required each year over the past ten years to achieve the same level of effectiveness on a specific insect pest. Which of the following best helps explain the observation?

Some individual insects are more likely than others to survive

Which of the following best describes acid mine drainage?

The leakage of water containing toxic materials from rocks to increase..

The following question(s) refer to the graph. Glyphosates are herbicides that are often applied to genetically modified (G M) crops to kill weeds without harming the crop itself. Which of the following statements best explains the relationship shown on the graph?

The use of glyphosate has selected for herbicide resistance

A new 450-unit housing development will replace several small farms on the outskirts of Fremont. The development will be composed of 1/4-hectare lots with nearly identical footprints, as show below. Which of the following will be the development on the local water supply?

There will be less recharge of groundwater

Which of the following is true of farm-raised salmon?

They are often infected with parasites and sea lice.

The following question(s) refer to the graph. Glyphosates are herbicides that are often applied to genetically modified (G M) crops to kill weeds without harming the crop itself. Which of the following statements identifies a concern associated with the increased proportion of GM crops being grown?

Use of GM seeds can lead to loss of genetic diversity in crops

A new 450-unit housing development will replace several small farms on the outskirts of Fremont. The development will be composed of 1/4-hectare lots with nearly identical footprints, as show below. One important step that homeowners in the new development can take to protect water quality in Samel Creek would be to

Use only persistent organic pesticides to control weed spots

A new 450-unit housing development will replace several small farms on the outskirts of Fremont. The development will be composed of 1/4-hectare lots with nearly identical footprints, as show below. One important step that homeowners in the new development can take to protect water quality in Samel Creek would be to

Use rain barrels to reduce the flow of storm water into the creek

Which of the following is the best example of the tragedy of the commons?

Water pollution from oil rigs concentrated in the Gulf of Mexico

Based on the information shown in the graph, which of the following statements is most likely to be true?

When precipitation varies, streams in watershed II experienced...