Fission
They are called decomposers
It is called enzyme.
There is not a particular "cell" that breaks down the nucleus during the cell process of mitosis. However, the nucleus does begin to break down in the phase known as prophase/prometaphase.
A digestive enzyme
Lactose functions at the brush border to break down lactose into smaller sugars called glucose and galactose for absorption.
The process that breaks up molecules into smaller units is called catabolism. Large molecules, such as nucleic acids, are broken down into smaller molecules, such as amino acids.
They are called enzymes.
It is called weathering.
weathering
erosion
Atoms are made of a nucleus that is surrounded by electron clouds. The nucleus is formed from all the atom's protons and neutrons. Proton and neutrons are made up of even smaller particles called quarks.
lysosomes, by giving broken particles to nucleus