Radiometric dating definition yahoo

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Many people think paleontology is the study of fossils. Paleontology is traditionally divided into various subdisciplines: Micropaleontology: Study of generally microscopic fossils, regardless of the group to which they belong.

Paleobotany: Study of fossil plants; traditionally includes the study of fossil algae and fungi in addition to land plants.

Both carbon dating methods have advantages and disadvantages.

Mass spectrometers detect atoms of specific elements according to their atomic weights.

For example, the meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second.

The standard for the kilogram is a platinum-iridium cylinder kept at the International Bureau of Weights and Standards in Sèvres, France.The International System has base units from which all others in the system are derived.The standards for the base units, except for the kilogram, are defined by unchanging and reproducible physical occurences.Palynology: Study of pollen and spores, both living and fossil, produced by land plants and protists.Invertebrate Paleontology: Study of invertebrate animal fossils, such as mollusks, echinoderms, and others.A rarer form of hydrogen known as deuterium has one proton and one neutron: its mass number is 2.