Question: What advantages are provided to developing rural areas by building and using an anaerobic digester?

Answer:

Question: Why does nitrogen have to be “fixed”? What organisms are responsible for nitrogen fixation?

Answer: Nitrogen has to be ¨fixed¨ because it is unusable by most living organisms. Plants, animals, and micro-organisms can die of nitrogen deficiency. The organisms that are responsible for nitrogen fixation are bacteria and plants.

Question: The transformation and transport of substances through Earth’s systems are known as biogeochemical cycles. What is included in these?

Answer: What is included in the transformation and transport of substances through Earth´s systems which is known as biogeochemical cycles are living biosphere, and the nonliving lithosphere, atmosphere, and hydrosphere.

Question: Explain the relationship between energy and economic development.

Answer:

Question: The best determination of a community’s quality of life is _______.

Answer: c.

the energy used per capita

Question: Explain the goals of the World Resources Simulation Center.

Answer:

Question: The dust bowl refers to _______.

Answer: c.

years of dust storms in the Midwest in the 1930’s

Question: Explain why the definition of a quality life is highly individualized.

Answer:

Question: Which of the following is true concerning energy flow through an ecosystem’s food chain?

Answer: c.

Energy is lost at each successive energy level in the chain.

Question: Explain why the energy harnessed per person (per capita) has increased so dramatically since the industrial revolution.

Answer: