Ascientist wants to determine the best light wavelength for growing plants. he grows plants in four test groups as shown in the table below. what, if anything, was wrong with the experiment?
a. he should only grow one plant in each group.
b. he should only change the wavelength of light for each group.
c. he should add a control group with a co2 level of zero ppm and a light intensity of zero percent.
d. there is nothing wrong with the experiment.

B He should only change the wavelength of light for each group

Explanation: I just took the test and got it right

answer; ///i believe the correct answer is (

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