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andrew11 [14]
3 years ago
7

What caused the composition of Earth’s early oceans to transition from dissolved carbon dioxide to dissolved oxygen?A.

Biology
2 answers:
Lera25 [3.4K]3 years ago
8 0
C) It's the most certain answer as all animals are believed to have arise from aquatic unicellular bodies that multiplied and evolved into complex organisms. Like all forms of live they respired and took some millions of years to evolve into land animals thus consuming CO2 into O2.
Tema [17]3 years ago
5 0

Hello.

The answer is: A.Ultraviolet rays from the Sun converted dissolved carbon dioxide to oxygen.

the more carbon dioxide that people pumped into the atmosphere by burning fossil fuels, the more the oceans would absorb. The ocean would continue to soak up more and more carbon dioxide until global warming heated the ocean enough to slow down ocean circulation.

Have a nice day

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Answer:

A. 14.59

Explanation:

Firstly, rounding a number means making a number simpler but keeping its value close. So rounding 14.587020 means making it look less complex but making sure the rounded value is within range of the original value.

Next, we have to know that to round a number;

* Digits below 5 (<5) rounds down the next digit to their left i.e. we leave the digits the same and turn the rounding digit to 0.

* Digits above 5 (>5) rounds up the next digit to the left i.e. we add 1 to the next digit

Next, to round to 4 significant digits means we want to see only the first four non-zero digits in our value. Note that, all non-zero digits i.e. 1-9 are significant

Hence, 14.587020 will be:

= 14.587020

= 14.58700

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We have four (4) digits which are non-zero already, hence we stop here and remove all zeros to the right

Hence, 14.587020 to 4 significant digits is 14.59 i.e. 14.587020 ~ 14.59

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