Answer:
What leaps one time out of four?
Environmentalists want to keep this from drying.
Remove 'Y' and you do this with apparel. Remove 'E' and I am cautious.
It covers you, you lose it every day and you'd die without it.
Even if you throw it away, it still comes back.
If you can spot one of these eastern warriors, it means they're not doing their job right.