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.
Gallon is unit of volume in imperial and U.S. customary systems. After the metric system is adapted, many countries replaced it with liter. In u.s. customary system, there are two types of gallons (fluid and dry) and they are different in sizes, in imperial system there is only one type gallon. It's commonly used unit of volume such as measuring the fuel efficiency as miles per gallon, etc. The abbreviation is gal.