What is the cheapest material on the earth?

Answer 1

Here are some materials that are all tied for the title. Everything on this list is free.

You may have to pay somebody to collect it and bring it to you, and he may have to

buy some expensive machinery and pay some workers to do the collecting. But right

there at the source, nobody ever pays anything for these materials:

-- air

-- water

-- oil

-- coal

-- gold

-- silver

-- aluminum

-- iron

-- copper

-- Mercury

-- uranium

-- lead

-- magnesium

-- salt

-- sulfur

-- helium

-- natural gas

-- wood

-- top soil

-- lettuce

-- cotton

Answer 2

The cheapest material on Earth is likely sand. Sand is abundant and easily accessible in many parts of the world, making it inexpensive to use in various applications such as construction and manufacturing.