Medical and fitness experts concur that stretching is an important part of an exercise program, designed to prevent injuries, reduce muscle tension, and promote flexibility. a. true b. false

The answer is TRUE. Stretching daily or a few times a week as its own activity can boost muscle and joint health. Adding it to your routine does provide a flexibility that decreases the risk of day-to-day injury. It also aids athletic performance improves posture, and boost blood circulation.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c