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Vika [28.1K]
4 years ago
6

In the context of the development of the conceptus, the ________ serves as a biochemical barrier, allowing dissolved substances

to pass to the fetus but blocking some kinds of viruses and bacteria from passing into the fetal circulatory system.
Social Studies
1 answer:
Anuta_ua [19.1K]4 years ago
5 0

Answer:

Placenta

Explanation:

The placenta is an organ which are not permanent in a pregnant woman body and it functions is to help connect the fetus through the umbilical code to the uterine wall in other to allow the fetus to receive nutrient through the blood supply by the mother.

Placenta helps to fight against internal infection by blocking some kinds of viruses and bacteria from passing into the fetal circulatory system and help to removes waste products from the baby's blood.

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The correct answer is five.
According to David Dickinson, a researcher who was interested in the communication between teachers and students, the optimal number of back-and-forth exchanges that a teacher should have with his student in a conversation is five. Fewer than that is too few; more than that is too many. 
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3 0
4 years ago
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