My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Can you solve this picture maths equation?

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

The more you take me, the more you leave me behind.
Who Am I?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

What you cannot hold but it is yours?

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.

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

I’m tall when I’m young, and I’m short when I’m old. What am I?