CBSE Class 9 Answered

Every part of an ecosystem is at least partially dependant on the other. Every animal plays a role to keep it balanced. Greater species diversity ensures sustainability for all life forms, and healthy ecosystems can better withstand disasters. The whales have a significant role in the global marine ecosystems and declines in whale populations can reasonably be expected to impact many other marine species. Whales play a very important role in the balance of nature. Whales help to keep the populations of their prey species in check