What's the difference between saying bye and goodbye​

You say "bye" when you are leaving and you will see the person again. "Goodbye," however, is often understood as an indefinite parting, that it may be the last time you will see the person again.

Explanation:

hope it's helpful to you (≧▽≦)(≧▽≦)

Explanation:

goodbye means its last meet now from today we can't meet. bye means going away for short time

what are the sentences?

ccd puts the honeybee populations and crop health at risk.

the above detail from paragraph 2 supports the inference about honeybee.