Scientists Now Believe That Comets Falling to Early Earth Played

question 36

Multiple Choice

Scientists now believe that comets falling to early Earth played a role in the evolution of life. What role did these comets play?

• A) They brought CO₂ and H₂O.
• B) They brought ammonia ions (NH₄).
• C) They generated a lot of energy when they hit Earth.
• D) All of the above are true.

---

Definitions:

REM Sleep

A phase of sleep characterized by rapid eye movement, during which dreaming and increased brain activity occur.

Visual Images

Visual images are representations of objects or scenes that can be seen by the mind or through digital or physical mediums, often used in communication, art, and memory recall.

Psychoactive Drugs

Substances that alter perception, mood, or consciousness when consumed.

Perceptions

The processes by which individuals interpret and organize sensory information to give it meaning.