There's no limit on bad things happening.
One of the bad things of isolationism is that it can lead to bad things happening in other countries. These bad things can at some point impact your own country. Another bad thing about it is that it can lead a country to not really understand what is happening in other parts of the world. This can be dangerous.
Nature IS the environment.
Lots of "bad things" can happen; basically you need to analyze each of them separately.
They had to keep bad things from happening.
Bad Things would happen.
bad things are happening to the environment
he gets angry because there are always bad things happening around his favourite city.
people are hunting them down and selling there horns for money xx:)
look bothways before you cross the street
well they were bad because alot of things was happening
Then it means you are afraid or maybe you're having bad things happening or will happen in your life.