Producers uke this plant take in oxygen and release carbon dioxide during
just like animals and other living things
A) decomposition
B) photosynthesis
C) transformation
D) cellular reconstruction

I think B)

Explanation:

What your asking isn't that clear but if you said 'producers' is a kind of plant that creates their own food and the process is called photosynthesis.

But at the same time your question says "this plant take in oxygen and release carbon dioxide during  just like animals and other living things" Im not sure that plants are the ones to take in oxygen and release carbon dioxide so

I'm sorry if this didn't answer your question.

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

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b