Um... Cultural festivals
nothing about safety in there<span />
Answer:
Neurons are brain cells, numbering in the billions, which are capable of instant communication with each other through chemical messengers called neurotransmitters. ... The brain then attempts to make an internal representation of our external world through complex chemical changes.
Explanation:
Friction is harmful because if your riding and you suddenly stop the friction will make you keep going forward and you'll fall super hard on the concrete(my experience).You also lose your balance. Friction is helpful because it prevents you from hitting cars and pedestrians.
1. Clinics, hospitals, and health centers employ dietitians.
X-rays and CT scans and MRIs
