From the picture we can see that a man is cutting down a tree with a axe in a big hourglass. But, there is much water above the tree.
It is without doubt telling everyone, which the man continues to cut down the tree, he will be dying from the water. We need to realize the importance of the environment, but the sad truth is that environmental problems are becoming more and more serious all over the world. There are many examples of this, such as cars have made the air unhealthy for people to breathe and poisonous gas is given off by factories.
Fore some of people have realized the importance of the environment, but for others is not awareness. So, people give a variety of activities to make people take actions to protect our environment. There is that goes” every just need to step forward once, then the world will step more”

图片；

简单看了一下

1. 第一句的结构有问题。 可以改为：It is without doubt that if the man continues to cut down the tree, he will be dying from the water.

2. poisonous gas is given off by factories，我不是很确定give off这里是不是合适，我觉得discharge应该是肯定可以用的。而且such as后面应该不能直接加句子。
可以把之前的such as 改成for instance，或者这两个句子都改为名词词组的形式。

3.Fore some of people have realized the importance of the environment, but for others is not awareness.
我觉得没有必要用两个for. 可以用Some people have realized the importance of the environment, but others are not fully aware of this.

4. There is that goes” every just need to step forward once, then the world will step more”
是说有句话是这么说的么？
如果是这个意思前面可以改成： There is a saying that goes"......”或者简单一点说As the saying goes...