The most common meaning of precipitation is rain, snow, or sleet. It can also mean the product of certain chemical reactions, such as a solid is formed in a solution.    â¦ When diffusion or a chemical reaction results in the creation of a  solid, this is known as precipitation.It is most commonly used to  refer to rain.recipitate is the now insoluble part formed when two chemicals react. Usually a solid, but if the fluid were dense, it may not settle.
Did people and dinosaurs live at the same time? No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth. However, small mammals (including shrew-sized primates) were alive at the time of the dinosaurs. Many scientists who study dinosaurs (vertebrate paleontologists) now think that birds are direct descendants of one line of carnivorous dinosaurs, and some consider that they in fact represent modern living dinosaurs. This theory remains under discussion and shows that there is still much we don't know about dinosaurs. Return to Dinosaurs: Facts and Fiction. This page is URL:https://pubs.usgs.gov/gip/dinosaurs/people.html. For more information, please contact Robert Weems at rweems@usgs.gov or Ronald Litwin at rlitwin@usgs.gov.
The Bible teaches that God made the heaven and earth, the sea, and all that is in them in the six days of creation. That answers the question as to how long the dinosaurs have been on this earth. They did not appear on this earth 225 million years ago and then die out some 65 million years ago.God created them during the same week He created all the other animals, and the same week that He created man. The dinosaurs were evidently created on the fifth and sixth days.hey believe that dinosaurs disappeared from the earth some 65 million years ago, long before man came along. They make these statements as if it were a known, proven scientific fact that dinosaurs were long gone by the time men appeared on the earth.