DNA packaging. Each chromosome consists of one continuous thread-like molecule of DNA coiled tightly around proteins, and contains a portion of the 6,400,000,000 basepairs (DNA building blocks) that make up your DNA. The way DNA is packaged into chromosome is a factor in how protein production is controlled.
An important part of photosynthesis is light thus the answer would be : <span>Sunlight provide light energy that allow photosynthesis to occur in plankton and aquatic plants.</span>