Clean Air Act (CAA), US Federal law, passed in 1970 and later amended, to prevent air pollution and thereby protect the ozone layer and and promote public health. The clean air act gave the federal environmental protection agency the power it needed to take effective action to fight environmental pollution. Hope this helps シ
Answer:
the spreading of something more widely.
Explanation:
Traits controlled by genes can only be acted upon natural selection because they have to helpful to the survival of that organism.
Normally cooks with microwaves emitting from a device in the microwave(sorry,I don't know the name of the device)
