You find an undescribed plant. It has small, free-living gametophytes and large, longer-lived sporophytes. You also observe that dispersal is carried out using spores. You thus conclude that your discovery is a .

A. gymnospermB. angiospermC. non-vascular plantD. seed plantE. seedless vascular plant

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Explanation:

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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

it should be briana that has it to me