Which source of air pollution in most big cities is the worst? airplanes
factories
cars and trucks
power plants

How soon after the war broke out was this cartoon published

Select all that apply. which of the following are themes found in creation myths? where the first person came from who the descendants were which religion is the true religion how things were created a supreme being explanations for bad things how the world will end asap

Afeature that an organism __ and reproduce in its environment is called a