Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.
Systematics is the study of the units of biodiversity. Systematics differs from ecology in that the latter is concerned with the interactions of individuals (and therefore species) in a particular time.
The correct answer is True , my reason being is because they eat decomposed / decomposing things to get their food, they are not fighters , rather lazy
An object in an electrical circuit resists the flow of energy called a B. Resistor.
The name "resistor" implies that the resistor resists the flow of energy. We can calculate the amount of resistance across a resistor.
