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nmar nmar
wrote...
Posts: 513
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6 years ago
A vein is a blood vessel that always carries
 
 a. blood toward the heart.
  b. blood away from the heart.
  c. oxygen-rich blood.
  d. oxygen-poor blood.

Question 2

The digestive system is concerned with
 
 a. blood circulation.
  b. digestion and the absorption of nutrients.
  c. reproduction.
  d. excretion of urine.
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Replies
wrote...
6 years ago
Answer to q. 1

c

Answer to q. 2

c
nmar Author
wrote...
6 years ago
Thanks a whole bunch, all were right.
wrote...
6 years ago
Thanks for confirming...
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