In a scientific experiment, a VARIABLE changed is any factor that can change or be
Answer:
permeability
Explanation:
dictionary definition: the state/quality of a material or membrane that causes it to allow liquids or gases to pass through it
in biology we use this term to describe the cell membrane, it is "semi-permeable" because it allows certain gasses and molecules to pass through
The answer is Charles Darwin. He was the first to theorize evolution from a common ancestor.
They are specialised cells.
