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marishachu [46]
3 years ago
6

There are the same amount of carbon atoms on Earth now as there were in the past, but there are more in the atmosphere ever befo

re. What explanation do you have for this?
Biology
1 answer:
kupik [55]3 years ago
3 0

The global average atmospheric carbon dioxide in 2019 was 409.8 parts per million (ppm for short), with a range of uncertainty of plus or minus 0.1 ppm. Carbon dioxide levels today are higher than at any point in at least the past 800,000 years.The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since our planet and its atmosphere form a closed environment, the amount of carbon in this system does not change.

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masya89 [10]

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Read 2 more answers
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lidiya [134]

The correct answer is B. Hypothalamus.

Explanation

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4 0
3 years ago
How would being able to bring water into the gills when the mouth is closed benefit a bottom-dwelling shark or ray?
trapecia [35]

Answer:

The ability to bring water into the gills when the mouth is closed would benefit a bottom dwelling shark or ray, because it would allow them to be more discreet when in the process of catching prey and they would be able to stop swimming. Most sharks have to continuously swim or else they would sink, while being able to bring water into the gills when the mouth is closed would highly benefit them and allow them to stop swimming for a moment.

Explanation:

I am not 100% sure this is the correct answer, but I am currently doing a lab on this, so I am using the knowledge I previously had and online resources. I am pretty confident though.

6 0
3 years ago
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5 0
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