Some people say that humans are too weak to harm the
earth
. But scientists believe that, human activity has a crucial impact on our environment. I think that human beings have the most negative effect on the planet
such
as climate change and consumption of
earth
's natural resources.
First
of all, during the
last
century, carbon dioxide in the atmosphere has increased due to the industrialization of many things,
such
as transportation or production in the factory. When sunlight reaches the
earth
, it provides some of the energy that the
earth
needs, and the rest of it is going out of the atmosphere to the space, which is called an energy balance. When particles
such
as CO2 get increased and collected in our atmosphere, they capture more light which leads to an energy imbalance and making the
earth
warmer.
This
phenomenon is called global warming.
Therefore
, humans are the major cause of
this
issue. Global warming is the biggest threat to human and the
earth
causing ice to melt, rising sea levels, and
also
abnormal weather conditions, including severe flood and drought.
As the population grows, humans have to build more houses and consume more food, which lead to the deforestation and extinction of many species of animals. Forests help to provide the oxygen that we can breathe. Humans cut more trees to have more wood in order to build houses and produce the paper. They
also
need more land, where they can grow and harvest food products, so they began destroying forests. Deforestation is one of human activities that hurt our environment. Nowadays, eighty percent of the nature area in my country has been destroyed by human activities during
. Many animals go extinct due to overhunting.
For instance
, excessive hunting for meat, fat and skin have helped significantly reduce polar bears; Or humans have hunted crocodiles for their valuable skins used to make shoes, belts, bags, etc.
However
, if people distances themselves from nature, it can recover itself,
for example
, humans evacuated Chernobyl,
then
, after 30 years, the area has become a forest.
In a nutshell, we reach the conclusion that human activities not only is a cause of the global warming, but it
also
destroys and depletes the
earth
's resources
such
as forests and animals. In general, humans have had a direct impact on the
earth
.