Fossils are often said to take a million years to form. However, as of 2014 it has been proven that a fossil can take a shorter period of time to form. This period can be a thousand years or less. The earliest fossil discovered dates back to about 3.5 billion years; however, there are fossils that have been discovered to be only a few years old.Know More
Fossils are the preserved marks or remains of plants or animals that lived in the geologic past. They are formed through a naturally occurring process known as fossilization. Fossils form from animal tracks or bones embedded on the earth’s crust. Fossils can be found on land and beneath water bodies, such as lakes and rivers.
There are different types of fossils, including mold fossils and cast fossils. However, the two main types are trace fossils and body fossils. Trace fossils consist of marks left behind by an organism, such as teeth marks or footprints, while it was alive. Body fossils consist of parts of an organism, such as bones, teeth or claws.
The fossilization process varies according to external conditions and tissue type. The various types of fossilization processes include permineralization, bioimmuration, adpression, replacement and recrystallization, cast and molds.Learn More
Common descent, an idea central to Darwin's theory of evolution, is well supported by multiple chains of evidence from the fields of genetics, biogeography and comparative anatomy. The fossil record also provides both direct and indirect evidence of descent with modification from common ancestors, though this line of evidence was generally unavailable to Darwin in the mid-19th century.Full Answer >
Although most Native American men do not sport a mustache or a full beard, this does not mean that they are unable to grow facial hair. Most Native American men prefer to keep their faces clean shaven, although men from several tribes in, for example, the Northwest, do wear mustaches and even full beards.Full Answer >
The role of an anthropologist is to research on biological, sociohistorical, linguistical and archaeological aspects of human beings. Anthropology is divided into four fields including cultural anthropology, biological anthropology, archaeology and linguistic anthropology. Most anthropologists only pursue one of these fields as a career.Full Answer >
An example of good citizenship is when a person finds a wallet full of money and returns the wallet rather than keeping the money. Good citizenship comes in many forms and each person displays it differently.Full Answer >