Which statement is true of a placenta?
a. the placenta passes oxygen, nutrients, and other us...
Which statement is true of a placenta?
a. the placenta passes oxygen, nutrients, and other useful substances from the fetus to the mother.
b. the placenta passes oxygen, nutrients, and other useful substances from the mother to the fetus.
c. the placenta mixes blood from the mother and fetus together.
d. the placenta protects the mother from being attacked by the fetal immune system.
Answers: 2
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Place the steps tor the formation of the enzyme pepsinogen in correct order
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World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s
Answers: 3
Mathematics, 28.02.2020 03:26
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