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Morgarella [4.7K]
3 years ago
11

Scientists infer that oxygen first began to enter Earth's atmosphere after the appearance of

Biology
1 answer:
GenaCL600 [577]3 years ago
8 0

Oxygen entered the Earth's atmosphere after the appearance of the Great Oxidation Event (Great Oxygenation Event). The Great Oxidation is the first mass extinction on Earth.

The Great Oxidation lasted 2.4 to 2.0 billion years ago.

Oxygen appeared on Earth thanks to cyanobacteria using photosynthesis.

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<span>DNA, cell membrane, ribosomes, and membrane-bound</span>
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There is an increase in demand for higher quality and quantity of food and other products.

Explanation:

There is an increase in demand for higher quality and quantity of food and other products. So, there is a huge requirement for technological innovation.  Investment is needed in research and development to develop crops that are pesticide-free, resistant to disease, and able to face various weather conditions.  Vertical farming and carbon-capture technology can be used to meet growing world food demands.

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Which of the processes are coupled (i.e. LINKED) in prokaryotic organisms but uncoupled (i.e. UNLINKED) in eukaryotic organisms?
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Transcription & translation (Ans. A)

Explanation:

Prokaryotic organisms do not have membrane-bound organelles such as the nucleus, thus the process of transcription & translation occurs in the cytoplasm. Also because of the need for rapid life cycle, the mRNA molecules start to be made, & their ribosomes are ready to start making proteins more rapidly than Eukaryote, thus the process of the couple is quicker.

In eukaryotic organisms, transcription process start (happens) inside the nucleus of the cell and translation process can't start until the mRNA is transported out from the nucleus into the cytoplasm.  

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4 years ago
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Carbon source.

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The ocean is storing carbon, it is a carbon source.

It's storing the carbon until it's needed in the carbon cycle.

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