Ethonal is produced during b. Alcohol fermentation that converst sugars into ethanol.
Answer: Diatoms.
Explanation:
Diatoms are single celled group of algae that are found in aquatic habitat both freshwater and marine habitat. The are the most important primary produce in the marine habitat. They are photosynthetic I .e they have chlorophyll which help them to trap light energy from sunlight and uses carbon dioxide and water to produce food. They produce food with the process of photosynthesis.
Well the insects eat the plant and the small animals eat the insects and so on.if the insects die the food chain is broken.