In the Section "Investigating Life: Clues to the Origin of Language",how

question 12

Multiple Choice

In the section "Investigating Life: Clues to the Origin of Language",how did the researchers estimate that the original mutation occurred 300,000-400,000 years ago?

• A)They estimated by examining the fossil record.
• B)They estimated by using a molecular clock.
• C)They found the mutation in chimpanzee DNA.
• D)They found the mutation in Neandertal DNA.
• E)They found the mutation in 300,000 year old mice remains.

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Definitions:

Drinking Water Standards

Regulatory benchmarks set to ensure the safety and quality of water for human consumption.

Concentration

The amount of a given substance in a specified volume or mass of a solution or mixture.

Groundwater

Water that is found underground in the cracks and spaces in soil, sand, and rock, an important source of water for wells and springs.

Irrigation

The artificial application of water to land to assist in the production of crops.