Answer:
D. Solid Ice Crystals
Explanation:
"Cirrus clouds are wispy, curly, or stringy. They are found high in the atmosphere—typically higher than 6,000 meters (20,000 feet)—and are usually made of ice crystals." -National Geographic
Either you have made error in your experiment or you might have wrong hypothesis.
Producer would be missing vital nutrients
Would be missing ammonia
Please mark my answer as brainliest