Between sensory receptor and nerve cells, how are they both alike and how are they different

Sensory neurons (nerves) are the neurons that fire when exposed to outside stimuli. Example: when you touch an ice cube, you feel the coldness of that ice cube. They are the nerves that fire off and send signals to the other nerves. Sensory neurons can be activated through physical and chemical stimuli. Physical stimuli would be sound, touch, heat, light. Chemical would be taste or smell. Nerve cells are the active component in the nervous system. Nerve cells are the basic function of the nervous system. The difference between the two are that sensory neurons (nerves) can activate motor neurons for the muscles can contract. Basically, sensory receptors (which are also neurons) are made up of nerve cells. They both send electrical signals.

Explanation:

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