Answer:
Chemically
Explanation:
Your stomach acid would break down food and theYour stomach acid would break down food and that would be chemical.
The average velocity of Sandy is given by the total distance covered S divided by the total time taken t:

The total distance covered is

while the total time taken is 2 hours + half an hour (for the rest) + 1 hour and half, so

Therefore, the average velocity is
<span>It can form four covalent bonds. </span>