Answer:
C. Dissecting microscope
Explanation:
It is trying to see the surface
The SA node, the cardiac center in the medulla oblongata, and the endocrine system
81. There is 1 carbon, 2 chlorine and fluorine atoms in Freon 12. To draw them it forms a cross with C in the middle and Cl and F both on the opposite side.
Cl
l
F - C- F
l
Cl
82. Freon-12 and Freon-14 are called halocarbons or just halides.
Answer:
C) carbon dioxide and hydrigen