How much caffeine per kg of body weight is recommended about an hour before exercise to provide the most effective ergogenic response?

The correct answer is - 3- 6 mg.

Explanation:

Caffeine is a natural agent that is considered as an effective ergogenic by various scientists. Caffeine is naturally found in various plants. It has a stimulating role on the CNS to reduce the pain, fatigue.

The recommended amount of caffeine per kg of body weight is 3 to 6 mg, about an hour before exercise to provide effective mental and physical endurance or ergogenic response.

Thus, the correct answer is - 3- 6 mg.

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

b.