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

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

How can you take 2 from 5 and leave 4?

Which Burger Is Different in below image?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?