A. the evolution of the first air-breathing animals that could live on land
Explanation:
The event or set of events that is the most significant part of all the given options is that of the evolution of the first air-breathing animals that could live on land.
- The geologic time scale records deep time.
- It places events in order of their occurrence.
- Geologic time scale extends from the time of the earth's formation present.
- It preserves a record of land mark events that has shaped the earth.
- The evolution of the first air-breathing animals that could live on land is a significant event that occurred millions of years ago and it is a significant part of the geologic time scale.
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Answer:
cell division
Explanation:
This is where cells would get damaged or die and this process calls cell division occurs
Answer:
polyphyletic
Explanation:
Polyphyletic
The organisms in this groups show similar attributes, but lack a recent common ancestor and could have risen from convergence.
Take for instance, birds and mammals in a polyphyletic group of warm-blooded animals may possess a mixture of biochemical and physiological attributes. On the other hand, their most recent common ancestor was a cold-blooded species, which shows birds and mammals had their warm-blooded nature as separate groups.
Another example is the Elephants, hippopotamuses, and rhinoceroses belongs to a polyphyletic groups with each one coming from a separate small species.
The bacteria, Angelinus ballerinea secretes a compound that inhibits the growth of other Gram-positive bacteria. Scientists take this compound and add chemical groups to it to make it more stable for use in humans to treat bacterial infections. This is an example of antibiotic.
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What is antibiotic?</h3>
- Antibiotics from the key class of glycopeptides can stop this process.
- Through five H-bonds, these antibiotics bind to the C-terminal d-Ala-d-Ala of the murein precursor, lipid II, and immature peptidoglycan, preventing transglycosylation and/or transpeptidation during the production of the cell wall.
- Contrarily, antibiotics have easier access to the thick, porous peptidoglycan layer in the cell walls of Gram-positive bacteria, allowing them to more easily enter the cell and/or interact with the peptidoglycan itself.
- The two main antibiotics that prevent the synthesis of bacterial cell walls are penicillins and cephalosporins.
- Penicillin is one of many antibiotics that assault the bacterial cell wall in order to operate.
- The medications specifically stop the bacteria from producing peptidoglycan, a chemical that gives the cell wall the toughness it needs to live in the human body.
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Scientists can track the movement of endangered species