Which of the following statements defines the endocrine system? Group of answer choices It is comprised of hormones that regulate physiological functions. It is a part of the diencephalon that relays sensory impulses to the cerebral cortex. It is a part of the diencephalon that activates the autonomic nervous system. It is a network of nerves that connects the mind and the body.

Explanation:

it is comprised of hormones that regulate physiological function

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue

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