Why are plants and algae important in an aquarium?

• I am doing this assignment because it's part of our science project . The answer to that question is. Water plants and algae provide food for many animals ,from the huge moose to the tiny water flea.Because green plants and algae carry on photosynthesis to produce their own food,they are called producers .Producers make the food that animals need to live .
  
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• Since animals cannot produce their own food,they must eat other organisms to get energy . This is why animals such as the moose and tiny water flea ,are known as consumers . They eat ,or consume water plants and algae ,such as those you will find in your ecocolumns.