What are five ways humans alter the world's environment?

1.by cutting down trees

2.natural activities affect the earth through the poisonous gases emitted during volcanic eruptions which kill about hundreds or thousands of forest inhabitants like the animals for example. also, it destroys farmlands

3.Removing natural resources ie Coal, Oil, Gold, etc 

4.building things on/in it. IE homes/buildings/streets 

5.using and or contaminating the water supply

We produce tons of pollution (Water & Air)

We have overpopulated (more people - more food needed)

We have been deforesting forest and destroying habits for the animals and plants to live and causing extinction and loss of habit zones for animals

We have caused Acid Rain which is Sulfur dioxide and nitrogen oxides

We have made Global warming with industrial items and structures (Oil Rigs, Factories, Gas Powered Vehicles, Coal) causes Ozone depletion.

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].

Poverty can be changed through new jobs , raising the minimum wage , and support pay equality.