Genetic variation occurs.
Mutations are not copied over and over again.
Answer:
Hooke frequently included microscopy demonstrations, regaling the reigning lights of English science - Newton, Boyle, Wren - with a variety of preparations. He used a number of instruments to extend the range of vision and investigate appearance and behavior at levels unseen by the unaided eye.
Explanation:
A change in the substance by temp, color,
