Well it happens every six months, one in summer in June and winter December. And if i'm wrong then i understand :) <span />
Hydrogen Bonds mainly stabilizes the double helix<span />
<span>I believe the answer is Tell him you need a note from his health care provider to see if he can participate in practice.
A concussion can be dangerous and need an immediate medical assessment. Doing exercise will be dangerous as it could increase the risk of </span>an accident. It is important to make sure that the athlete is already assessed to prevent an unwanted accident.
The answer is halite i hope this helps