What were some environmental issues in the 1970s?

What natural materials are used to make a car? Why water is considered to be a resource that is in short supply when there is so much of it on earth? Speech on pollution and its evils effects? Long title of the immigration and refugee protection act? Is machinery nonrenewable? Two ways in which minor parties can have an effect on American politics are? Can we fill the ozone layer with other gases? Should two twin boys share a bedroom at the age of 8 when one of them is a trans gender and has a female body but is still male? What are the effects of deforestation on humans? What does the CU6 category in Permanent Resident card means? What kinds of clothes did ella baker wear? Who is Thomas J Conley? Two-thirds of the sulfur dioxide that pollutes the air is produced by? Which conservationist gave the slogan 'the use of natural resources for the greatest number for the longest time'? Should unemployed people be made to work for their welfare money? What is the difference between the way a fossil fuel power plant generates electricity and the way a nuclear power plant generates electricity? What does fluid work environment mean? What is the rope part of the dynamite called? Why is an eco column a useful tool? How does cutting down a forest affect the geosphere?