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Dimas [21]
3 years ago
15

What systems contain the heart

Biology
2 answers:
Darina [25.2K]3 years ago
8 0
The circulitory cuz the heart is pumping the blood through your entire body
Fudgin [204]3 years ago
3 0
The circulatory system
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In eukaryotes, extranuclear inheritance occurs when genetic information is transmitted by mechanisms other than through nuclear
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Which illness is most closely associated with time-temperature abused rice or other starchy foods?
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How had the study of mitosis affected scientists knowledge of cancer
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Bees see the colors yellow and blue, but not red. Flowers that need to be pollinated by bees are mostly yellow of blue. What typ
Inga [223]

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Natural Selection

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5 0
2 years ago
if an element has a half-life of 30 million years and there is 12.5% of it remaining in a rock, how old is that rock
Assoli18 [71]

Answer:

The half-life of a substance is the amount of time it takes for half of that substance to decay. However, after two half-lives, half of the half remaining will decay, leaving you with one quarter of the original substance.

So, after 1 million years you will have 50% of the original substance remaining.

And, after 2 million years you will have 25% of the original substance remaining.

After 3 million years you will have 12.5% of the original substance remaining.

And after 4 million years you will have 6.25% of the original substance remaining.

Explanation:

Hope it helps:)

3 0
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