The Corpus Callosum is what joins the two hemispheres of the brain.Hope that helps .
Both A and B are correct.
Cardiovascular system has to do with the heart, so anything to reduce the risk of that system (including the heart, bloodstream etc.) would be the answer for you. So just using Process of elimination:
A) Has to do with external exposure. <em>No</em><em />
B) Keeping hands clean <em>No</em><em />
C) Avoiding cigarette smoke <em>Yes</em>
D) Keeping your vaccinations up to date <em>No</em><em />
So your answer is C.
When you say "hands" does that mean 12 on each hand? or 12 for both hands. If it is 12 for each then I would say it is estimated that he has 6.48 billion toes on each foot. hope this helps.
