Answer:
A muscle strain, or pulled muscle, occurs when your muscle is overstretched or torn. This usually occurs as a result of fatigue, overuse, or improper use of a muscle. Strains can happen in any muscle, but they're most common in your lower back, neck, shoulder, and hamstring, which is the muscle behind your thigh.
Physical symptoms vary depending on who the person dealing with it is, and other physical aspects. Stress can cause weight loss, malnutrition, physiological problems such as outbursts and anger problems, head aches, stomach issues, etc.
Answer:
The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
Explanation:
5th percentile to 85th percentile