vital

Mars' soils are alkaline and lack the vital nitrogen compounds that plants need to grow.

“Good Night’s Sleep” Sleep and dreams are vital to processing and storing new information.

Thomas Bayes introduced two vital ideas.

It's down to the shale from the quarry, that's a vital key to it.

Some people say it's a necessary and nutritious food, vital for healthy bones, but others say it can cause cancer and lead to an early death.

So although the easiest solution is to close the canal or close a lock, it closes off this vital waterway that keeps goods moving in the Great Lakes.

All I ask is, before we invade Greenland, can we at least triple check that Greenland doesn't also control some vital chokepoint for the entire planet?