Exposure to 100 r's :

•will have little effect
•can cause radiation sickness
•is enough to kill a person

?

Your answer is B. Radiation Sickness.

Explanation:

Look it up on Go.ogle if you don´t believe me.

Hope this Helps! :)

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

the answer will be a) proteins i believe