Answer:
all of the above
Explanation:
gravity makes a planet have a combination go straight yet go around the sun at the same time creating an ellipse
sciencefocus
Well it surely isn't nuclear, or electrical. It's not radiant either.. So the only answer is chemical.
B.
All dentist equipment is used in the mouth. Many deseases, bacteria and viruses are transmitted trough saliva, and not all of these are weak. So, that is why we clean the dental operatory, to lower the chances of transmitting anything.
Hope it helped,
BioTeacher101
