efectos de la contaminacion

1. Nowadays planet’s climate is changing every year.it is caused by factors such as biotic
processes, variations in solar radiation received by Earth, plate tectonics, and volcanic
eruptions. Certain human activities have also been identified as significant causes of recent
climate change, often referred to as "warming”. It is unbelievable that many populations of
mammals, birds, reptiles and fish are suffering from this kind of problem .as we can see in the
photo of the article many Pacific walruses had been forced to “haul out” of the ocean by using
their tusks to pull themselves onto the rocky shore, where they have far less access to food
and are far more vulnerable to predators. I think, not only the pacific walruses have this kind of
problems but also all the planet even humans. We have to be aware about this big problem
that all of us have cause. It’s a hard work but if we stay thinking or worried about it ,we are not
going to do anything. We must to start saving our planet now.