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svp [43]
3 years ago
15

An example of a communicable disease is

Biology
1 answer:
marysya [2.9K]3 years ago
8 0

Answer:

An example of a communicable disease could be influenza. A communicable disease is just a disease caused by virus or bacteria that spreads from person to person.

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I think it's A not sure tho
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The major function of the placenta is to
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(2) exchange food, oxygen, and waste between

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Explanation:

In most mammals like humans, the fetus produced as a result of the fertilization of the sperm and egg, develops in the uterus or womb of the female. However, this developing fetus cannot yet fend for what it requires for survival and is still dependent on the mother e.g nutrients, oxygen etc. How do this substances get to the fetus? Here comes the role of the PLACENTA.

Placenta is an organ in the uterus that serves as a connection between the mother and the fetus in her womb. The placenta enables the mother to pass digested nutrients to the fetus and exchange gases (oxygen and Carbondioxide) between them via the umbilical cord. The placenta also enables the mother remove waste produced by the fetus into her bloodstream.

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Mycorrhizae, specialized symbiotic associations between the roots of plants and fungi, are characteristic of about 90% of all plants.

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Learn more about Mycorrhizae here : brainly.com/question/6875191

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Antibody molecules and receptor molecules are similar in that they have both?
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