Learning about the average

My class and I were learning how to find the average.

Level 2 algerbra

W.A.L.T- simply expressions by combining like terms 

Algebra

W.A.L.T- Simplify algebraic terms

Pollution

There are five different types of pollution in the world.
Air pollution, water pollution, soil pollution, noise pollution, and light pollution.
There are many causes of these problems and we are one of them.

Air and water pollution is actually two of the most dangerous pollutants.
Air pollution is when the air is dirty and we can’t breathe properly.
It is mostly caused by fires, fumes from cars, volcano's, chemicals, and more.
I read on the internet that seven million people are killed every year from air
pollution and nine out of ten people breathe air containing high levels of pollutants. 

Water pollution is caused by humans. Humans all around the world
dump their plastic and rubbish into the ocean and it’s not good for the environment.
Every minute humans dump a truck full of rubbish in to the ocean.
Humans are the cause of almost all pollution.

Soil pollution is also caused by us. We spray all our plants and insects
with chemicals such as herbicide which kills our plants and insecticide which kills our insects.
Everyone in this world needs to change their ways and take care of our planet.