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Mazyrski [523]
3 years ago
12

Explain the four main principles of natural selection

Biology
1 answer:
Reptile [31]3 years ago
4 0

Answer:

Reproduction: Individuals mate to produce the next generation.

Individual variation: Individuals differ in various characteristics.

Different needs: What helps one survive does not always help another.

Resource competition: There are limited resources desired by other individuals and species.

Explanation:

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In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed that a mold
Viktor [21]

Alexander Fleming (1881-1955) was a Scottish bacteriologist who discovered penicillin, an antibiotic identified by the substance that moved around a fungus of the species Penicillium notatum.

<h3>1: State the issue or problem that Fleming investigated.</h3>

he investigated the contamination of a fungus that produced antibiotic substances

<h3> 2 What was Fleming's hypothesis?</h3>

That the fungus produced antibiotics and inhibited the growth of bacteria

<h3>3 How was the hypothesis tested?</h3>

He made a nutritive broth, where he placed the fungus, after growth, he extracts the substances

<h3>4 Write a statement that summarizes the results of the experiment.</h3>

He discovered that antagonistic microorganisms may have biochemical devices, such as the production of antibiotic substances, in order to survive.

<h3>5 The Lear experiment for the development of what major medical breakthrough?</h3>

Yes, after this discovery millions of people did not die from bacterial infections.

With this information, we can conclude that Fleming performed several experiments concluding that the fungus Penicillium notatum had a substance capable of killing bacteria. This substance was called penicillin.

Learn more about Fleming in brainly.com/question/21473149

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7 0
2 years ago
HURRY 50 POINTS
Vinil7 [7]

Answer:If we are talking the word it means, fishing with a trawl net or seine, or, sifting through as part of speech. if it isnt the word then i dont know:(

Explanation:

6 0
3 years ago
Please help!! if it’s right i’ll give brainliest answer.
jekas [21]

Answer:

in the center linking the 2

Explanation:

6 0
3 years ago
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Which of the following determines the sequence of amino acids used in the synthesis of cellular proteins? a) Golgi apparatus b)
lawyer [7]
The answer is b.) DNA.
6 0
3 years ago
HCL is found in our stomach, but our stomach wall is not degradation. Explain reason
SCORPION-xisa [38]
Because the HCl In the stomach is diluted so it isn't as strong as pure HCl
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3 years ago
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