Ways to prevent stomach diseases?

eating a balanced diet,maintaining good sitting postures

Cut back on fatty foods.

Avoid fizzy drinks.

Eat and drink slowly.

Quit smoking.

Don't chew gum.

Exercise more.

Avoid foods that cause gas.

Avoid sweeteners that cause gas such as fructose and sorbitol.

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