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sladkih [1.3K]
3 years ago
9

How do geologic timelines help scientists?

Biology
1 answer:
Otrada [13]3 years ago
7 0

Answer:

They used relative dating to divide Earth's past in several chunks of time when similar organisms were on Earth. Later, scientists used absolute dating to determine the actual number of years ago that events happened. The geologic time scale is divided into eons, eras, periods, and epochs.

Explanation:

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What is the sequence of travel by an impulse through the cardiac conduction system?
adoni [48]

The sequence of impulse through the cardiac conduction system starts from SA node passes to AV node to atrioventricular bundle fibers and finally to Purkinje fibers.

Heart is an organ that receives oxygenated blood form lungs and deoxygenated blood from different parts of body. Oxygenated blood is transported to different organs and deoxygenated blood is transported to lungs for oxygenation.

Now, to perform this transportation, the auricles and ventricles of heart contract and relax. In order to contract and relax, impulse generation is required, which begins at SA node or Sinoatrial node. It is also referred to as pacemaker of the heart. SA node contracts the atria and the impulse transfers to AV node or Atrioventricular node.

This is followed by transfer of impulse to atrioventricular bundle fibers which further passes it on to Purkinje fibres for ventricular contraction. Now the blood is sent to lungs and aorta as per it's oxygen status.

Learn more about cardiac conduction system -

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4 0
2 years ago
Which of the following is a part of the cell theory?
Mariulka [41]
1: D
2: B
3: B
4: C
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9: D
10: A
6 0
3 years ago
What molecule is created when 4 hydrogen atoms bind with oxygen and 4 electrons
34kurt

i say ho8 or something like that

4 0
3 years ago
Fruit flies have a diploid number of 8, and honeybees have a diploid number of 32. In which case will crossing over have greater
skelet666 [1.2K]
Diploid cells are like daughter cells coming from a mother cell called a haploid cell. So the more daughter cells are born, the greater the chance of getting hybrids and creating more diversity on the genetic races existing. In this case, the answer would have to be honeybees.
6 0
3 years ago
How do the ocean waters most often provide fresh water for the Earth?
Alona [7]

Answer:

alter precipitation and storm patterns

Explanation:

5 0
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