What is a good, environmentally harmless alternative for crude oil/petroleum?

Biodiesel and ethanol are known as renewable fuels because they are manufactured from plants instead of petroleum. In Minnesota, ethanol is primarily made from corn, although it can also be made from sugar cane or wheat

one way archaeology us understand the past is through the material objects it finds, allowing us to know what was being used, and when. for example a dig recently found a flute, believed to be the oldest musical instrument found to date.

i hope this

answer; the civil right act of 1964;