According to Modern Science, What Was the Approximate Chemical Composition

question 17

Multiple Choice

According to modern science, what was the approximate chemical composition of the solar nebula?

• A)98% hydrogen, 2% helium
• B)50% hydrogen and helium, 50% everything else
• C)roughly equal proportions of hydrogen, helium, water, and methane
• D)98% hydrogen and helium, 2% everything else

---

Definitions:

Cerebellum

A major feature of the hindbrain of all vertebrates that is responsible for motor control, coordination, precision, and accurate timing.

Hippocampus

A major component of the brain involved in learning and memory, located within the medial temporal lobe.

Distributed Practice

A learning strategy where study sessions are spaced out over time, rather than condensed into short, intense periods, to improve long-term retention of material.

Cram Session

A focused study period immediately before an exam aiming for rapid memorization or understanding of content.