APES 5.1-5.4

Many communities experience the tragedy of the commons. What is one way a local community might regulate a shared and limited resource and reduce the tragedy of the commons?

Divide the resources into parcels and assign them to individuals.

What changes to the local hydrologic cycle will result if large areas of land experience clear-cutting?

Evaporation of water from the soil will increase.

What is most likely to occur in a forested region that has been recently clear-cut?

The concentration of nitrates in streams running through the region will increase.

What is a commercially used method in the USA for harvesting trees and is most likely to lead to a fragmented landscape with serious impacts on biodiversity?

Clear-cutting

What environmental consequences will most likely result from clear-cutting deciduous forests for logging?

More carbon dioxide will be added to the atmosphere and increase anthropogenic climate change.

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

Carbon dioxide

Describe the most unsustainable method of clear-cutting forests to harvest timber.

All of the trees in a forest are cut down and removed in one operation.

Farmers need to make many decisions about how they grow their crops. One of these decisions is whether to use synthetic fertilizer or organic fertilizer, such as manure. An advantage of using synthetic fertilizer instead of organic fertilizer is what>

Synthetic fertilizer can provide more targeted macronutrients to the crops

Which country has the greatest percentage of land area affected by desertification?

Australia

Factors that contribute to the rise in world hunger include all of the following except?

E. increasing consumption of vegetable protein in place of meat protein

Why is genetic diversity important?

Genetic diversity is important because there it allows populations to adapt to new or changing environments

What is a major environmental problem caused by using the agricultural practice of tilling?

Eutrophication from excessive fertilizer use

What is a realistic solution for farmers to decrease the amount of fertilizer and sediment runoff into aquatic ecosystems?

crop rotation

Describe a fundamental characteristic of the green revolution in food resources.

The development of new strains of crops with higher yields

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

Accumulation of plastics in the great pacific Garbage Patch

or

Oil well in gulf of Mexico

Which of the following best illustrates the concept of the tragedy of the commons

Depletion of an aquifer by regional farmers

or

Fish are shared resources, and as the fishing industry competes for the fish, the reserve extraction is no longer sustainable

Overgrazing of public land by privately owned livestock is an example of the

Tragedy of the commons

Two branches of a river have different sediment loads. Based on the diagram, which of the following most likely led to the differences in the amount of sediment in the two branches of the river?

Deforestation from the clear-cutting (or: branch 1 sediment laod)

Which of the following statements best explains the relationship shown on the graph?

C. The use of glyphosate has selected for herbicide resistance in weed populations

Which of the following statements about genetic diversity is true?

B. Genetic resistance to pests and diseases can be increased by crossing a crop plant with ancestral varieties

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

Based on the data in the graph, which of the following illustrates the approximate percent increase in total water withdrawals between 1970 and 2010?

56%

GMOS bad

Loss of genetic diversity, invasive species, health risks

This graph shows how much money was made each round when people took 75% of the fish (blue, leftmost), 50% of the fish (red, center), and 40% of the fish (yellow, rightmost). What does this graph tell us about the best way to fish from the lake?

yellow (40%)

Image: This graph shows how much money was made each round when people took 75% of the fish (blue, leftmost), 50% of the fish (red, center), and 40% of the fish (yellow, rightmost). What does this graph tell us about the best way to fish from the lake?

What is a major environmental problem caused by using the agricultural practice of tilling

soil erosion