I don't wish to do your homework for you.Ask your parents or teacher for help.
It depends whare you live.But everwhare it is yesterday's tomorrow.
The higher megapixel count the more resolution you will get.Pixeles are little tiny squares of color.So the more you have the image will appear sharper.Hope that helped.
When you become an adult you will know.All you have to do is read the manual.WHAT;THERE IS NO MANUAL ENCLOSED!?! Oh well,better luck next time kid.
Usually you manually enter the channel number you want by manually scanning to it.The you enter the frequency you wish to moniter on that channel and hit enter when the full number is entered.Scan manually to your next channel and repeat the process.Good luck.
You may have over exerted yourself.If it persists however you may want to consult your doctor.
NO entry fee or gaurntee here,so enjoy!
If you believe it so, than yes.
Whale & zebra.
Life is a precious and FRAGILE gift.Live without regrets,but without doing any harm to yourself or others.Great question,and good luck !!!