Imagine That a Few Centuries from Now, Scientists Discover Life

question 86

Multiple Choice

Imagine that a few centuries from now, scientists discover life on a new planet. This life will MOST likely be based on:

• A)silicon.
• B)magnesium.
• C)oxygen.
• D)carbon.
• E)None of the other answer options is correct.

---

Definitions:

White Matter

Brain tissue comprising mainly of myelinated nerve fibers, which connect different parts of grey matter to each other.

Nerve Fibers

Long, threadlike extensions of neurons that transmit electrical impulses away from the neuron's cell body, facilitating communication within the nervous system.

CSF

Cerebrospinal Fluid, a clear, colorless bodily fluid that fills the brain's ventricles and surrounds the central nervous system, acting as a cushion and participating in nutrient transport and waste removal.