wind mills
They only made 2 inventions
1) To save money. 2) To help protect the environment.
George Carvers mostimportant 2 inventions are the peanut proudoct and peanut butter
um peanut butter and bridges i dont know i got it of a random website
The two inventions that have revolutionized communication are the telephone and the internet.
automobile, steam engine
elevators and skyscrapers
There where many inventions in the 1920s as it was a time of change but 2 big ones are the car and insulin. I also think that crayobs were invented in the 1920s.
The atomic weapon.
nuclear bomb
TV and radio.
The United Nations Environment Programme (UNEP) is an international agency that works to protect the environment by promoting sustainable development, tackling climate change, and addressing environmental issues.