Protozoa that live in the blood or tissue of humans are transmitted to other humans by an arthropod vector (for example, through the bite of a mosquito or sand fly). Entamoeba histolytica is a protozoan. A microscope is necessary to view this parasite.
The scientific revolution began in Europe towards the end of the Renaissance period and continued through the late 18th century, influencing the intellectual social movement known as the Enlightenment.he concept of a scientific revolution taking place over an extended period emerged in the eighteenth century in the work of Jean Sylvain Bailly, who saw a two-stage process of sweeping away the old and establishing the new.
Many of the greatest scientific advances of the Renaissance were achieved by astronomers. From new theories about the solar system to the discoveries of sunspots, new stars, and other objects, the sixteenth and seventeenth centuries witnessed major revolutions in the way people thought about and studied the known universe. Astronomy languished for centuries after the fall of Rome.