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irinina [24]
3 years ago
14

How have antibiotics changed the quality of life of for humans over the past Century​

Biology
2 answers:
Reptile [31]3 years ago
6 0
It lead to a huge population increase in area that it was available to is one of them
anastassius [24]3 years ago
4 0

Answer:

Antibiotics have helped in a speedy recovery for human illnesses over the past century.

Explanation:

Because anti biotics were not present centuries ago, many would get sick and even die. However, antibiotics work by affecting things that bacterial cells have but human cells don't. This helps to fight off the bacterial cells and fight infections and viruses, leading to a speedy recovery.

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Answer:

a = 9

Explanation:

5(a + 4) - 6a + 1 = 12

5a + 20 - 6a + 1 = 12

5a - 6a + 20 + 1 = 12

-1a + 21 = 12

     -21      -21

--------------------------------

-1a = -9

/-1     /-1

---------------------------------

a = 9

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