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Ymorist [56]
3 years ago
9

Which U.S. government agency ensures that federal laws protecting human health and the environment are enforced fairly and effec

tively?
Department of the Interior
Environmental Protection Agency
National Science Foundation
Biology
1 answer:
UNO [17]3 years ago
7 0
<span>environmental protection agency</span>
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When a scientist uses radiometric dating to determine the age of a rock specimen, would he use a radioactive element with a shor
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Answer:

He will use a radioactive element with a long half life of greater than 1 billion years

Explanation:

Rocks are an aggregation of solid mass which is usually rich in minerals. The age of rocks is established using radiometric dating method.

According to Oxford Dictionary, radiometric dating is "a method of dating geological specimens by determining the relative proportions of particular radioactive isotopes present in a sample."

The age of rocks can only be ascertained using isotopes that have very long half lives because many of these rocks are very old (aged billions of years) hence their age can only be determined using elements that has a half life greater than 1 billion years.

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3 years ago
List the ocean regions that have the highest sea surface salinity
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The high sea surface salinity can be observed in the Pacific Ocean, the Indian Ocean, the Arabic ocean and the Mediterranean sea.

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Due to rainfall and evaporation of water from sea the density varies with varying salts and minerals concentration that aggregate at the surface. The salinity in the seawater varies according to the amount of evaporation from a particular area.

Low salinity water is found in polar and subpolar regions that are near to the equator. Regions of high salinity are observed in the seawater which is centered around 30 degrees north and 30 degrees south to the equator due to the excess evaporation in these areas.

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