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best on this question.

A)

it pollutes the air. Eliminate Reactivate

B)

finding a fuel source. Eliminate Reactivate

C)

the disposal of byproducts. Eliminate Reactivate

D)

it does not produce much energy. Conserving the quality of available water is a high priority world-wide. There are many countries whose water supply is reaching dangerous levels of contamination. For example, the longest river in China, the Yangtze, is less than 5 years from death if nothing changes. The statements below are possible effects on the environment if the Yangtze dies, which one is a positive effect on the environment?Answers available in …10

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A)

The loss of biodiversity in the area could permanently damage the ecosystems in area. Eliminate Reactivate

B)

Loss of this river could stress the other water supplies in surrounding areas causing a domino effect. Eliminate Reactivate

C)

The Yangtze empties into the Sea of Shanghai which may lead to serious problems in this important body of water. Eliminate Reactivate

D)

Since the pollution in the water is high in organic material it will eventually decompose and make the area more fertile.  What does the endocrine system regulate?Answers available in …10

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best on this question.

A)

blood flow Eliminate Reactivate

B)

voluntary muscle impulses Eliminate Reactivate

C)

involuntary muscle contractions Eliminate Reactivate

D)

hormone and glandular secretions  Which compound is a reusable, complex protein that speeds up chemical reactions?Answers available in …10

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A)

starch Eliminate Reactivate

B)

a sugar Eliminate Reactivate

C)

a lipid Eliminate Reactivate

D)

an enzyme  Scientists do not base their conclusions onAnswers available in …10

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A)

ethics. Eliminate Reactivate

B)

qualitative data. Eliminate Reactivate

C)

quantitative data. Eliminate Reactivate

D)

published research.  Environmental agencies have concerns over mineral mining regulations due toAnswers available in …10

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A)

economic concerns. Eliminate Reactivate

B)

political concerns. Eliminate Reactivate

C)

endangered species. Eliminate Reactivate

D)

groundwater pollution. Eliminate Reactivate  9) How do human beings contribute to the phosphorus and sulfur cycles?Answers available in …10

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best on this question.

A)

deforestation Eliminate Reactivate

B)

planting trees and shrubs Eliminate Reactivate

C)

adding chemical fertilizers to the soil Eliminate Reactivate

D)

introducing fish species to ponds and lakes Eliminate Reactivate  10) Humans use ________ to pass on desired phenotypic traits to the next generation of organisms.Answers available in …10

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A)

natural breeding Eliminate Reactivate

B)

selective breeding Eliminate Reactivate

C)

selective insemination Eliminate Reactivate

D)

artificial fertilization Eliminate Reactivate  11) Jupiter is a gaseous planet. Its gravity is many times stronger than the gravity of Earth. What method would scientists use to collect information about the surface of Jupiter?Answers available in …10

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A)

Send probes to relay data from the surface of Jupiter. Eliminate Reactivate

B)

Study the surface of Jupiter from Earth, using telescopes. Eliminate Reactivate

C)

Send astmini literature help,Health & Medical,,

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