Answer:
3.
C. The circular shape
4.
D. Arw there fragments of meteorites in and around the crater?
5.
C. Triangles became extinct
the are 32 bones in the jaw
Explanation:
they are the teeth,
<h3><u>info:</u></h3>
teeth are also bones , when we die we can see that the teeth do not rot like the flesh
<h3>hope it helps you :)</h3>
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.
