What has 13 hearts but no other organs?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

What does below Rebus say?

XLR8

It is always ahead of me yet I can never see it. What is it?

What number divided by 4 is the same as that number minus 4?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Jenifer is learning to drive her car. She went down a one way lane and in the wrong direction. But she do not break any law.

How come ?

What number do you get when you multiply all of the numbers on a telephone's number pad?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?