At birth, the human brain is approximately what percent of its ...

[Mimi]

At birth, the human brain is approximately what percent of its adult size?
 
  a. 50 percent
  b. 75 percent
  c. 15 percent
  d. 100 percent
  e. 25 percent

Question 2

Why are polychlorinated biphenyls toxic to humans? All of the following are consequences except:
 
  a. They weaken the immune system.
 b. They cause liver damage.
 c. They cause brain damage to children exposed in the womb.
  d. They cause skin cancer.

[jxjsniuniu]

Answer to Question 1

e

Answer to Question 2

d

[Mimi]

Thanks for the timely response, appreciate it

[nanny]

YES! Correct, THANKS for helping me on my review