Answer:In humans, viruses that cause disease like cold and flu are spread through bodily fluids, like spit or snot. The virus is so small that it leaves our bodies in these fluids, and can even float through the air in droplets from a sneeze or cough. The virus can enter the body through the eyes, nose, or mouth
Explanation:
Answer;
improve your chances of going to college
Explanation;
Physical activity helps improve academic achievement. Teachers have long suspected it. Physical activity can have an impact on cognitive skills and attitudes and academic behavior, all of which are important components of improved academic performance.
Exercise affects the brain on multiple fronts. It increases heart rate, which pumps more oxygen to the brain. Exercise stimulates the brain plasticity by stimulating growth of new connections between cells in a wide array of important cortical areas of the brain.
Steroids give athletes advantages such as more muscle mass and less body fat. I believe there is even a type of steroid that also promotes hormonal testosterone levels.
Overall it is thought to enhance performance.
Hope this helped!
<span>Skeletal muscle contractions pull on tendons that are attached to bones. If contraction of the muscle causes the muscle to shorten, the bone, the body part will move.</span>
