Spot what is wrong here in below Picture?

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

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Can you solve the photo plexer logic ?

How can you leave a room with two legs and return with six legs?

what does this picture(rebus) riddle means ?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?