The impact of ecosystem destruction are the following:
Increased flooding due to the erosion of soil and lack of trees
Rising of the sea levels due to the melting of the glaciers, caused by Global Warming
Disruption of the food chain when the apex predators become extinct
Water shortage - we only have a finite supply of fresh drinking water
Food shortage as the lands become barren and the oceans become fishless
Loss of biodiversity as whole species of living things disappear due to deforestation
Pollution will eventually become unmanageable and affect our health.
Rising temperatures may be too much for all living things on the planet