Environmental Midterm 5

Which of the following statements is NOT true about tropical rainforests?

• Some rain forests may receive up to 400 inches of rain a year.

• Significant rain in tropical forests washes away much of the nutrients in the soil.

• Tropical rainforests are some of the most undisturbed by human disruption.

• The majority of nutrients in rainforests are stored in vegetation.

Which of the following is NOT a service provided by forests?

• Storing carbon dioxide

• Minimizing soil erosion

• Replenishing carbon dioxide

• Improving water quality

Which of the following is NOT a critical technique for sustainable forestry?

• Logging

• Reforestation

• Forest management

• Agroforestry

Which of the following is a likely result of deforestation?

• The amount of carbon dioxide removed from the atmosphere is reduced

• Wind blows soil away because the plant cover has been removed.

• Water runs off the land more rapidly and causes floods.

• All of Above

Planting native trees on privately-owned land can help maintain biodiversity and the health of the local ecosystem.

• True

• False

Some climate scientists even believe grasslands may be more efficient and reliable at removing carbon from the atmosphere than forests, because grasslands are more resilient after fires and drought.

• True

• False

Which of the following is NOT a type of grassland?

• Temperate

• Savanna

• Montane

• Deciduous

Which of the following qualities determines if an area should be considered a grassland?

• Height of plants

• Amount of precipitation

• Location

• Amount of stored carbon in soil

Recall that biodiversity measures the variety of different organisms in an ecosystem. Which of the following would limit the biodiversity of a grassland ecosystem?

• using pesticides and fertilizers on crops

• the loss of topsoil from farming practices

• grazing livestock animals on grasslands

• farming a single variation of a crop such as corn

The Dust Bowl lasted how many years?

• 12

• 15

• 10

• 11