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mixer [17]
2 years ago
15

How does the circulatory system work

Biology
2 answers:
max2010maxim [7]2 years ago
7 0

Answer:

The circulatory system is made up of your veins. They carry blood to your heart and away from it. The blood going through your body carries oxygen, nutrients, and hormones, and removes wastes like carbon dioxide.

Explanation:

olga55 [171]2 years ago
5 0
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
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A marine scientist observes that fish are found at higher concentrations closer to the coast of California than farther out in t
gavmur [86]

Answer:

Option B

Explanation:

When ever a scientific research or experiment is conducted , it is made sure that the results obtained are consistent through multiple trials. Here , only two trials are done i.e one on coast of California and the other on the Pacific Ocean.

Since the number of samples taken for this study are not as per the standard sample guidelines and hence the result obtained can not be considered as a acceptable.

Thus, option B is correct

5 0
3 years ago
Epigenetics refers to a special kind of hereditary mechanism. Epigenetic changes do not change the DNA nucleotide sequence, yet
OlgaM077 [116]

Answer:

Histone acetylation or DNA methylation.

Explanation:

The epigenetics may be defined as the genetic phenomena that might cause mutation in the organism's genome. The DNA sequence of the organisms do not get changed in epigenetics.

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Thus, the answer is histone acetylation or DNA methylation.

5 0
3 years ago
The first plants that grow after a disturbance are called what?
Lina20 [59]
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7 0
3 years ago
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Natalija [7]
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igomit [66]

Answer:

Condensation

Explanation:

6 0
3 years ago
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