Diseases, conditions and injuries impacting the knee and lower leg. Pain in the front and center of the knee (usually underneath the kneecap) can occur in teenagers or young adults who are physically active. Rather than a physical abnormality, itâs caused by overuse or training without adequate stretching or strengthening exercises.
Gallons of water per metric ton A metric ton (1000 kg) of water occupies exactly one cubic meter. One cubic meter is 264.17 gallons.
1 cubic kilometer of water contains 1 trillion liters of water. Therefore there are approximately 1,300,000,000,000,000,000,000 liters of water in the oceans, which is 1.3 sextillion liters. To get to gallons, there are 3.78541178 liters in 1 gallon. Doing the math, that means there are 343,423,668,428,484,681,262 gallons of water in the oceans.