Answer: the pioneer species
Explanation:
The simple organisms may be unicellular, consisting of just 1 cell, but more complex organisms are multi-cellular, which means they might have more than one. So the answer you are looking for is A. 1
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As photosynthesis is a process that requires sunlight, the rate of this process will be 0 in a room without any light.
However, even if the dark room has very little light, it may still not be enough for photosynthesis to occur. This process requires certain levels of sunlight.
