What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Which is faster, Heat or Cold ? Explain.

If six children and two dogs were under an umbrella, how come none of them got wet?

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

Katniss and Peeta are liars. They both lie on some specific days.

Katniss lies on Fridays, Saturdays and Sundays. She speaks the truth on all other days.

Peeta lies on Tuesdays, Wednesdays and Thursdays. He speaks the truth on all other days.

Can you tell that one day of the week when both of them will say "Tomorrow, I will lie."?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can you write down eight eights so that they add up to one thousand?

Spot what is wrong here in below Picture?