Hooke
http://en.wikipedia.org/wiki/Robert_Hooke
Robert Hooke
Matthias Schleiden and Theodor Schwann used a compound microscope to discover that living things are composed of cells. This was a major breakthrough in biology known as the cell theory, which states that all living organisms are composed of one or more cells.
He saw that all living things have cells.
The main disadvantage of an electron microscope compared to a compound microscope is that it requires a more complex and expensive setup. Electron microscopes also cannot be used to observe living specimens because the process typically involves vacuum conditions and sample preparation techniques that would kill living cells.
A microscope is a common tool used by scientists to explore living things. It allows for magnification and visualization of cells, tissues, and organisms at a microscopic level. By using a microscope, scientists can study the structure and function of living organisms in detail.
Robert Hooke, i'm doin da puzzle 2 :), :]
the part of a compound microscope that moves the body tube up and down for focusiing
A compound light microscope would be the most suitable choice for observing a living amoeba. This type of microscope allows for observation of live specimens under magnification, while also providing enough clarity to study cellular structures.
Small things.
a microscope Either a microscope or a magnifying glass, depending on just how small the 'tiny living things' are.
Lots of tiny things, but it depends on how strong your microscope is.
How did the microscope contribute to knowledge about living things?