Answer:
They created harmful inks that were considered toxic.
It also contributed to environmental pollution
Explanation:
I think they invented inks that weren't harmful and they removed these waste that were harmful to the environment.
Hope this helps:)
The correct answer is Classical music.
Do it do it do it do it do it do it
Transparent, because transparent means that you are allowing light to pass through, and you do not want a background color.
