Answer:
Relative age dating is the process of determining if one rock or geologic event is older or younger than another, without knowing their specific ages
Absolute age dating is measuring the physical properties of an object itself and using these measurements to calculate its exact age
Explanation:
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Answer:
D.electrical signals and chemical neurotransmitters
Explanation:
chemical transmitters are the language that neurons use to connect eachother.
Answer:
Cindy is the one who is contributing most to the destruction of the ozone layer.
Explanation:
The deforestation caused by Cindy's father and the release of gases that her boyfriend's car contributes a lot to the destruction of the ozone layer. However, cindy is the one who is contributing the most aggressively.
This is because, scientists, after much research and studies, were able to prove that the Fréons gases are the ones that contribute more efficiently to the destruction of the ozone layer. These cases are formed by carbon, fluorine and chlorine atoms that have great destructive power when emitted into the atmosphere.
Atmospheric carbon dioxide comes from two primary sources—natural and human activities. Natural sources of carbon dioxide include most animals, which exhale carbon dioxide as a waste product. Human activities that lead to carbon dioxide emissions come primarily from energy production, including burning coal, oil, or natural gas.