A specific location in America produces electricity only from fossil fuels and geothermal energy. The table below shows the amount of methane in the atmosphere of the location from 1960 to 2000. Based on the table, which of these conclusions is most likely correct about the period between 1980 and 1990? Electricity was generated only from fossil fuels. Electricity was generated only from geothermal energy. Several fossil fuel units were replaced by geothermal units. Several geothermal units were replaced by fossil fuel units.

Several fossil fuel units were replaced by geothermal units.

Explanation:

Though geothermal units also release methane - along with several other pollutants - they release FAR less than a fossil fuel plants.

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