UnknownSciences

In 1827, Robert Brown observed through the microscope that some pollen grains suspended in water were moving constantly and randomly in no ...

What is the Particulate Model of Matter? Based on the evidence gathered from observations and experiments, scientists proposed a model which...

Osmosis is the diffusion of water through a semi-permeable membrane . More specifically, it is the movement of water across a semi-permeabl...

What is Diffusion ? Diffusion is the process in which molecules from a region of higher concentration to one of lower concentration by rando...

In mathematical logic , an atomic formula (also known simply as an atom) is a formula with no deeper propositional structure, that is, a f...

Leukemia is a cancer of the blood or bone marrow and is characterized by an abnormal proliferation (production by multiplication) of bloo...

The arteries that bring blood to the heart muscle (coronary arteries) can become clogged by plaque (a buildup of fat, cholesterol and other...