Why are nitrogen-fixing bacteria important in ecosystems?

1 answer:

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Bacteria that change nitrogen gas from the atmosphere into solid nitrogen usable by plants are called nitrogen-fixing bacteria. These bacteria are found both in the soil and in symbiotic relationships with plants.

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Some people argue that evolution, which is generally associated with progressive increases in the

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This argument would not be valid because it fails to take into account the mechanisms through which evolution occurs and misunderstands the second law of thermodynamics.

The second law of thermodynamics states that the total entropy of a system must always increase. The argument stating that this law disproves evolution given that evolution can be considered as a decrease in entropy, fails to realize that the second law states that the total entropy must increase, this does not mean that entropy cannot decrease at one point, to then increase more so at another.

The other aspect of evolution that this argument fails to account for is that evolution is a chaotic process. Evolution, though having a final product that may be considered as increasing in organization, is at heart a chaotic process caused by random mutations and the fragile process of natural selection. Therefore, rather than disprove it, the second law of thermodynamics is actually the driving force behind continued evolution.

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3 years ago

The correct functions of your lungs contribute to the normal pH level of between 7.35 and 7.45 in your blood. If your lungs do n

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Answer:

Explanation:

The lung not being not been able to exchange and remove the carbon dioxide created a health problem due to the concentration of hydrogen ions (H+) being 10X being higher than in normal body. Although the difference is just about 1, it will result increase hydrogen ion concentration 10 times, similarly an increase or decrease in pH from 4 to 2 will give rise to 100 times increase in hydrogen ion concentration. It can equally be applied to hydroxyl in concentration.

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This ocean zone is found on the ocean bottom and includes the ocean floor and the sediments that have settled on the bottom

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Answer: sea floor (at the very bottom of the ocean)

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3 years ago

The theory of plate tectonics helps to explain ____.

lorasvet [3.4K]

The theory of plate tectonics helps to explain the formation of the earthquakes.

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3 years ago

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What could be the consequence of a mutation that changes the sequence of nucleotides in a promoter?

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Answer:

The changes in the sequence of nucleotides present within a promoter is a prime cause of the defected transcriptional regulation, which may eventually result in disease. However, not every modification within the sequence of a promoter influences the regulation of transcription, it relies upon the nature and the location of the genetic defect.

When a mutation results within the sequence of a promoter region it may hamper the usual procedures of gene stimulation by affecting the step by step alignment of the transcription factors at the promoter region. Therefore, as a consequence, a mutation within the sequence of a promoter may result in the enhancement or reduction in the level of mRNA and thus protein.

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3 years ago