Answer:
obviously we need to go to doctors with safely....... just joking
The answer is A, just by reading the answer choices you can tell that b, is for a slide in a slide show.
Silicon dioxide is dissolvable in water and has a high melting point because the atoms in the dioxide has a strong bond between them, which requires a lot of energy to break them.
171 km³ per year.
0.006% = 0.006/ 100 = 0.00006 ;
0.00006 * 2,850,000 km³ = 171 km³ per year.
