Modification over time

Natural selection

Inheritance with a consequence

Mutation

All living things are made of cells

All cells come from other cells

Cells secrete substances that make parts like shells and bones

All living things are multicellular

An organism consumes food (like meat) to take in energy

Energy is impossible or very difficult to get from the environment, so animals get it from the air

All living things get energy the same way

Photosynthesis is an example