10 points + branliest and
what type of symbiotic relationships do termite and digestive tract microorganisms have?

a. mutualism
b. commensalism
c. parasitism

    Termites depend on digestive tract to digest the complex sugars into simpler molecules that they can use for food. Cellulose is a major sugar and it is broken down in the hindgut of the termite by microbes into molecules called short-chain fatty acids. The termite's cells use these acids as nourishment, just like our cells do.

therefore, answer is A. mutualism

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