Finding Several Species of Fossils, Rather Than Just One, in the Same

question 39

Multiple Choice

Finding several species of fossils, rather than just one, in the same rock layer is more useful to geologists because:

• A) It indicates the sediments must have been deposited at the same time when all the species were present.
• B) If some of the fossils are broken, others could be used as index species.
• C) If the conditions were not right for fossilization for one species, maybe the conditions were better for other fossil species.

---

Definitions:

Pointing Device

A hardware input device, such as a mouse or trackpad, used to interact with and control a computer by pointing, clicking, and dragging on-screen objects.

Electronic Components

Basic physical entities in electronic systems used to affect electrons or their associated fields.

Mechanical Components

Parts or elements that are part of a larger mechanical system, each serving a specific mechanical function.

Software

General term for the programs and operating information used by a computer.