Document is not the answer according to myitlab the correct answer is SCREEN
A bee is both harmful and useful
Both expeditions were guided by the stars, using a sextant to find the latitude and longitude for their destination.
Why were stone tools useful? Both electronics & stone tools allow us to do things we could not do without them or could do but with much less efficiency.
the same type of diagram for both works.
As with many things it is probably a bit of both. What he is is single minded. What he is is determined. He is driven & focussed. He makes things happen as he wants them to. Both militarily & in the political sphere.
The host and destination ports.
they are useful for both offence and defense
lion are useful and harmful
Wireless headsets are most useful for using a cell phone safely and legally while driving. They are also handy to have when you're trying to multi-task and need both hands free.
Both are acceptable, depending on context. For example:Fishing bait is useful to fisherman.Fishing bait is useful for catching fish.
Both :)
It depends on what you want to do. Both are useful to learn and know about. Knowing either one of them would enable you to do lots of things. Knowing something about both of them would be even better.