About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog. Water is never sitting still. If all of the world's water was poured on the contiguous United States, it would cover the land to a depth of about 107 miles (145 kilometers). 2  Of the freshwater on Earth, much more is stored in the ground than is available in lakes and rivers.
If you happen to take too much Namenda, overdose symptoms may include drowsiness, changes in heart rhythm, vomiting, and unconsciousness. NamendaÂ® (memantine hydrochloride) is a prescription medication used to treat Alzheimer's disease. It belongs to a group of medications known as NMDA receptor antagonists.
Stroke warning signs may also include arm weakness, vision problems, trouble walking and severe headache. If you experience any type of paralysis in your body, do not try to self-diagnose. Seek medical help immediately. Bellâs Palsy Symptoms. Symptoms of Bellâs palsy vary in severity with each person. Common symptoms include: Facial muscle weakness, numbness or paralysis; Twitching; Drooping of eyelid or corner of the mouth; Drooling or little saliva; Dryness of eye or mouth; Excessive tearing in one eye; Change in or loss of taste; Other symptoms can include pain behind the ear or around the jaw, headache, dizziness, ringing of the ears, or heightened sensitivity to sound.