Global warming.

This effect has affected the world's climate, global warming is the result of pollution from factories that spew gases.

The gases of these factories have destroyed the ozone layer, causing the sun's rays enter with its dangerous radiation changing the planet's climate.

The panda bear

This species of bear came to the edge of extinction by poaching.

In China, the government penalizes the panda´s hunting with the death penalty. This reaction of the government helped to the recovery of this species.

Pollution of the rivers.

Humans have polluted many rivers, our waste are going to the rivers and oceans for this reason they are polluted.

The water contamination has affected marine life and river life, many species are endangered.

The Dodo

Distant relative of the pigeon, the dodo was a bird like a swan sized with a large head and a robust peak. Their wings were very short and improper to take flight.

The dodo was extinted by the human, it was hunted to the death.