Why do cellphone service providing firms often charge higher price to pre paid clients than those on contracts ​

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

What happens when two nitrogen atoms share electrons

9. technology can bring both good and bad things. building a vertical farm can increase food supplies in cities (good), but it may cause unemployment in rural areas (bad). give another example of both the good and bad sides of a technological advancement (5 noints)