Video: Fossil: Definition, Types, Characteristics & Examples. Fossils provide scientists with many clues about Earth's history, offering evidence of dinosaurs and strange plants that existed in the past. This lesson will define a fossil, look at different types and characteristics of fossils, and then describe how fossils are formed.
The final result of the dot product process can be: 1  Zero: we don't have any growth in the original direction. 2  Positive number: we have some growth in the original direction. 3  Negative number: we have negative (reverse) growth in the original direction.
In this instance the false negative can arise from three problems. 1  First of all check the box to be sure that the product has not expired or shows visible signs of damage. 2  Second, check to see if the sensitivity of the test purchased is 20 international units of pregnancy hormone (HCG).