Which of the Following Is an Essential Characteristic of an Index

question 49

Multiple Choice

Which of the following is an essential characteristic of an index fossil?

• A) The fossils are exceptionally abundant and well preserved.
• B) The fossils occur in deep- water marine sediments, but the organism actually lived in the sunlit, surface layer of the ocean.
• C) The organism only lived for a short period of geologic time.
• D) The organism lived only in specific environments such as beaches or estuaries.

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Definitions:

Sensory Information

Data that is collected through the senses (sight, smell, touch, taste, hearing), which is then processed by the brain to help individuals understand and interact with their environment.

Cortex

The outer layer of the cerebrum in the brain, playing a key role in memory, attention, perception, cognition, awareness, thought, language, and consciousness.

Forebrain

The anterior part of the brain, responsible for complex behaviors and functions, including thought, emotion, and sensory processing.

Hypothalamus

A region of the brain below the thalamus that coordinates both the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems.