Think of two toys rubbing. They get hot and scratch.
A lubricant is like a smooth slippery liquid that sits between them so they don’t fight.
It is a fluid made of long soft molecules that slide over each other very easily.
Imagine holding a ball up.
The Earth pulls it down like a magnet.
When the ball is high, it has stored energy.
This energy comes from gravity + height.
Chimerism means one person or animal has two different DNAs inside the same body.
It is like a body made from two tiny babies that mixed together very early.
Nutrients are the food pieces your body eats.
Respiration is the breathing-energy process inside your cells.
When nutrients enter your cells, respiration burns them gently to make energy.
