Answer:
Water
Explanation:
The main things living things need to survive are food, air, sunlight and water. You have to stay hydrated for your body to continue functioning
Answer:
One muscle flexes while the other extends
Explanation:
4= very brisk, hyper active w/ clonus, indicative of disease
3= brisker than average, may indicate disease
2= average, normal
1= diminished, low normal