ENVS Midterm 2

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The forms of renewable energy that currently account for the greatest amount of renewable energy production in the United States are

Biomass and hydropower

Golden rice is a cultivar of rice that was genetically modified to address problems associated with diets that are deficient in vitamin A. Golden rice is enriched with which one of the following?

beta carotene

The process by which water vapor passes through stomata from plants to the atmosphere is called

evapotranspiration

A radioisotope with a half-life of 10 years decays to a stable isotope. In 400 years, the radioactivity emitted by the radioisotope will decline by a factor of approximately __________________.

1,000,000,000,000

Which one of the following statements is true about a Hadley cell? Select one: a.Air rises at the equator and sinks at 30 degrees latitude b.Air rises at 60 degrees latitude and sinks at 30 degrees latitude c.Air sinks at 60 degrees latitude and rises at 30 degrees latitude d.Air sinks at the equator and rises at 30 degrees latitude

Air rises at the equator and sinks at 30 degrees latitude

In which two of the following countries are the greatest numbers of people living on less than $10 per day?

India and China

The four crops that account for the most production of genetically modified (GM) crops globally are

Soybeans, corn, canola, and cotton

What is detritus?

a combination of feces and decomposing organic matter

What is a Hadley cell?

a large-scale atmospheric convection cell in which air rises at the equator and sinks at medium latitudes, typically about 30° north or south.

Which of the following countries generates the greatest percentage of its electricity from nuclear power plants?

france

In hypothetical country A, everyone dies when they reach the age of 60. In hypothetical country B, which has a better health care system, everyone dies when they reach the age of 80. If the total population of both countries is stable, what percentage of the total population would you expect to be in the age group 32-43 years inclusive?

20% in country A and 15% in country B

Approximately what percentage of the world's croplands are used to feed domestic animals?

33%

chapter 8 : Which one of the following statements is not true? Select one: a.Since 1960, the percentage of people living in high-income countries has increased. b.Since 1960, life expectancy has increased. c.Since 1960, infant mortality has decreased. d.Since 1960, average income per capita has increased.

Since 1960, the percentage of people living in high-income countries has increased.

The nutrients that support plant growth in natural terrestrial ecosystems are supplied mainly by

breakdown of detritus

The country with the greatest number of solar hot water heaters is

china

Electricity produced by which one of the following is not an example of green power?

natty gas

If Earth rotated in the opposite direction, the Trade Winds in the northern hemisphere would blow from the

northwest


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