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IgorLugansk [536]
3 years ago
14

How did Mary Montagu discover a vaccine for smallpox

Biology
1 answer:
insens350 [35]3 years ago
5 0

Answer:

Lady Mary Wortley Montagu adapted "variolation" instead of "vaccination" to prevent smallpox in her children. She learned about it when she was in Constantinople (Turkey) with her husband. There, prisoners were intentionally inoculated with smallpox virus under their skin. When she saw that they didn't develop the disease and were among survivors, she inoculated smallpox virus to her children (son and daughter) as well using a needle. Later on, efforts of Edward Jenner towards vaccination were also recognized and it became a fashion to inoculate smallpox as a preventive measure.

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When two ova are released and both are fertilized by a sperm, what type of twins result?​?
Anika [276]
Fraternal twins are resulted.
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Fraternal twins are non-genetically identical twins.

Hope it helped!
3 0
3 years ago
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4 0
3 years ago
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Vera_Pavlovna [14]

Answer:

Intramolecular bonds are the bonds that hold atoms to atoms and make compounds. There are 3 types of intramolecular bonds: covalent, ionic, and metallic. Covalent Bond: a bond in which a pair or pairs of electrons is shared by two atoms.

Explanation: I asked my dad who is a doctor .... I hope this helps!!!

3 0
3 years ago
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Ilya [14]
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4 0
3 years ago
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The ultimate goal of sustainable development is to limit the future use of resources b. meet current and future resource needs C
egoroff_w [7]

The correct answer is B. Meet current and future resource needs.

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Sustainability implies an equilibrium between the natural resources available and the resources humanity requires. This equilibrium is reached when the natural resources extracted from nature are enough to satisfy human needs without depleting the resources or causing these are not available in the future. In this context, the goal of sustainable development is to make sure now and in the future resource needs are meet (option B). Moreover, this is possible through actions such as recycling, reducing deforestation, creating environment-friendly technologies, among others that reduce the depletion of resources or preserve the environment.

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