The Extinction of the Dinosaurs Has Been Associated with

question 18

Multiple Choice

The extinction of the dinosaurs has been associated with

• A) a virus leading to disease and massive loss of life.
• B) dinosaurs preying upon each other until they became extinct.
• C) a meteor impact at the end of the Cretaceous era that caused major cooling.
• D) new chemicals and ions in the environment which caused dinosaurs to become sterile.
• E) mammals who were more adapted and more able to acquire similar resources.

---

Definitions:

Retina

The light-sensitive layer at the back of the eye that captures images and sends them to the brain via the optic nerve.

Consciously Aware

Being fully aware of one's thoughts, feelings, and surroundings in the present moment.

Laboratory Conditions

Controlled environments where experiments are conducted under specific and standardized settings.

Sound

Audible waves that pass through the air or other materials and are detectable when they make contact with an individual's or an animal's auditory system.