The earths natural environment can be changed or altered by humans what are four ways this is done? 93 points

I belive four ways this can be done is when humans decide to drain rivers, produce plastic, destruction of reefs, and carbon dioxide emissions.

I hope this helped!

Explanation:

The answer is: 1.- Air pollution. 2.- Water pollution. 3.- Deforestation. 4.- The alteration of the ozone cup.

Explanation:  

Nature has been subject to use, appropriation and exploitation for the human being and for society and this has had a negative impact on the conditions of the natural resources necessary for life.

1.- Air pollution.

It is caused by cars and industries. They cause respiratory problems in people and animals, it damages the plants.

2.- Water pollution.

The main cause is the dumping of waste into rivers and the sea. It causes a decrease in drinking water and alters the balance of some communities.

3.- Deforestation.

Forests are cut down to obtain wood and cultivation areas. This affects the beings that live in them and causes desertification.

4.- The alteration of the ozone cup.

The existence of the ozone layer is vital for the preservation of life on our planet. In recent years some products such as aerosols have caused their deterioration, causing a hole over Antarctica.

The answer is: 1.- Air pollution. 2.- Water pollution. 3.- Deforestation. 4.- The alteration of the ozone cup.

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.