Why should people weigh the advantages and disadvantages of different alternatives when making choices?

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

so easy. just google the electromagnetic waves and it’ll pop up.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide