There are multiple devices that emit radio waves. The most obvious is are radiod and microwaves (yes, the food cooker). Wireless applicances also emit radio waves. But don't confuse everything to use microwaves. Some applicances use frequencies instead of radio waves. Some applicances that use frequencies are toy control remotes and a garage door.
I hope this helps! Please make sure ask me if you need more clarity!
D. All of the above.
<u>Reason:</u>
A. Fences can get in the way of a beautiful picture.
B: The animal's enclosure may be hard to get the perfect snap. Like a rock can be in the way of the animal. idk...lol
C. People want to see the animal as much as you do so they may block the way of a picture.
Example from Google..XD
False. You should have little text and lots of pictures, because you are the one who should be doing the explaining, not the presentation.
Answer: it means if you give a bad input it will result in a ad output.
Explanation:
It has n acronym GIGO which refers to how the quality of an output is determined by the quality of input.
Garbage is trash info... or input. And grabage out is the trash output.