Why is the european union concerned about pollution? a. pollution ruins the lives of people and wildlife. b. many environmental problems are costly and difficult to clean up. c. streams and air currents spread pollution broadly. d. all of the above

The answer is D.all of the above.

Let's check why all of them are correct:

a. Pollution ruins the lives of people and wildlife.

Pollution would contaminate the land and water, for human, the water will no longer ve suitable to use and the contaminated land will fail to grow crops, while consumption of animals or plants living in the area might cause poisonings. Mean while animals would lost their habitats due to environment no longer suitable for living.

b. Many environmental problems are costly and difficult to clean up.

This is true for most of the cases. For example,when waters are polluted, it might be a huge project which would be expensive to clean up and filter given the size of polluted places.

c. Streams and air currents spread pollution broadly.

This has occured already and the situation is alarming. When a place’s stream is contaminated, the river flow would bring the pollutants down and spread through different places quickly, the same goes with air currents.

Therefore all of the above are correct.

Hope it helps!

Italian workers migrated to northern provinces