Prehistory generally refers to the time before writing was invented and practiced, while history typically refers to the time period after which written records still exist. However, there is no clear dividing line between the two periods.Know More
History generally refers to events that were recorded. The Greeks wrote extensively about their culture and other cultures, and most of history after Greek times is well documented. However, the civilizations in the New World did not leave behind extensive notes, so prehistory refers to a later date for North and South America.
Experts debate whether early Egyptian culture should be considered prehistoric. While the Egyptians had a writing system, no paper documents have been discovered, so the history people have access to today is limited. Other cultures took extensive notes of Egyptian culture later, but it is unclear if their documents are reliable.
Other experts argue about when the prehistoric period ended. Most ancient writing is forever lost, and people have access to what survives primarily through translations and copies. The veracity of this information is difficult to determine, and translators and transcribers sometimes add or remove information accidentally or on purpose. Most of human history is not recorded. The only way to determine how early human civilizations functioned is by examining where they lived and what they left behind.Learn more about Prehistory
Nature refers to traits and characteristics that are inherited or genetic in origin, while nurture refers to traits and qualities that are learned by organisms as they grow. The terms "nature" and "nurture" consist of many different subcategories in the field of psychology. These categories fall under several different approaches and theories, which work together to describe the complex characteristics of humans and animals.Full Answer >
According to the Wound, Ostomy and Continence Nurses Society, sterile is the absence of and continued protection against all microorganisms, while aseptic refers to protections against pathogenic microorganisms. These two techniques, while similar in purpose, differ in severity and diligence. Sterile is the more thorough of the two types.Full Answer >
2D refers to objects or images that show only two dimensions; 3D refers to those that show three dimensions. Because reality exists in three physical dimensions, 2D objects do not exist. However, they can be portrayed in images and art.Full Answer >
Heredity refers to the passing of characteristics from parents to offspring. Genetics is the study of heredity, genes and variations in organisms. Heredity occurs in plants, animals, bacteria and fungi.Full Answer >