CherelleSassaman CherelleSassaman
  • 01-05-2014
  • Biology
Answered

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.

Answer :

annab annab
  • 01-05-2014
The answer is definitely B
Answer Link

Other Questions

homeostasis is maintained in a single celled organism by the interaction of
What were citizens of the polis expected to do A serve on juries B fight to defend the polis C obey the laws they liked D be devoted to the polis
Identify Two Policies That The Federal Government Can Follow In Order To Make The Business Cycle Less Disruptive
to be considered a successful adaptation must make the organism more likely to
how could the western democracies prevented World War ll
What is the percent 200 of 54
If the US attacked the Ho Chi Minh Trail why might it cause an international backlash against the US
Who was the first scientist to discover crystals
How much did the average car cost in 1982
Why do apples dipped in bleach not turn brown