Which of the following is not a type of air pollution?

a.) acid rain

b.) mercury

c.) ozone

d.) oxygen

it's soil is not fertile

!   hope it you   !

after the national party gained power in south africa in 1948, its all-white government immediately began enforcing existing policies of racial segregation under a system of legislation that it called apartheid. de klerk began to repeal most of the legislation that provided the basis for apartheid.