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Ksivusya [100]
3 years ago
9

7. The periodic table has changed over time as new elements have been added to it. Which

Biology
1 answer:
damaskus [11]3 years ago
6 0

Answer:

it will be the answer B. scientists discover new elenents.

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What method can scientists use to<br> determine when the fossil above appeared<br> on Earth?
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Answer:

Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

Explanation:

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3 years ago
_____ is the study of living or once-living things. This includes the human body.
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The study of the lives of early human communities through the examination of their physical remains. Objects made by humans that are unearthed by archaeologists. ... The study of the earth, especially it's rock forms.

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How is a scientific law different from other laws in society?
Galina-37 [17]

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D

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3 years ago
This bonds to cytosine (C) in DNA.
shtirl [24]

Answer: <u>Guanine </u>

According to Chargaff's rule, the base pairing in the DNA and RNA is fixed. Adenine always pairs with Thymine in DNA and Uracil in RNA. Guanine pairs up with cytosine. This complementary base pairing is universal and constant. That's why amounts are also equal. It means if cytosine is 20% in any DNA sample, then amount of guanine would be 20% as well.

4 0
3 years ago
Explain the advantages of red blood cells passing through a capillary one at a time.
algol [13]

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The advantage of this is that there is a larger surface area exposed, more time available and shorter difference for exchange of oxygen.

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