Lily has an underwater aquarium with, plants, water, and fish that eat plants. The aquarium is sealed so no material can go in or out, and has a glass slide that allows light to come in. The aquarium can also be covered to prevent light from entering. The number of energy storage molecules in the plants and fish started out low, but that number has been increasing over time. Has the aquarium been in sunlight or has it been covered during this time? What has happened to the carbon in the water?

the aquarium has been exposed to Sunlight because in order for the plants to survive, they need Sunlight. plants get their energy from the sun which helps them undergo the process of photosynthesis. During the process of photosynthesis, the carbon in the water will be recycled into oxygen

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.