What three things did scientist discover about living things and cells?

The three parts of the cell theory are as follows:
(1) All living things are made up of cells,
(2) Cells are the smallest units (or most basic building blocks) of life, and
(3) All cells come from preexisting cells through the process of cell division.

Cells were first seen and or observed by the natural philosopher Robert Hooke in the year 1665.

Hopefully this helped ^.^ please mark

Try and make the question more clear : )

Then it is june the conclusion to the second sentence is just restating "if it is june then it is summer"