Question

Note down the differences you observed in the sample of leaves collected by
you. Write two such characters that differed most.​

Answer 1

Explanation:

Taking steps to reduce or eliminate pollution from nonpoint sources such as streets and farms will help to maintain the ecological balance. Sewage and run-off of agricultural fertilizer can cause the rapid growth of algae in lakes and streams. The growth of algae blocks sunlight and depletes the oxygen in the water.