The Most Massive Elements (Such as Those That Make Up

question 13

Multiple Choice

The most massive elements (such as those that make up rocky planets like Earth) were formed

• A) in the early universe.
• B) inside stars and supernovae.
• C) through meteor collisions.
• D) in the core of Earth.

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Definitions:

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.

Life on Earth

The collective existence of all organisms, both past and present, that inhabit our planet, adapting and evolving over billions of years.

Gravity

A fundamental force of nature that causes all things with mass or energy to be attracted to one another, keeping planets in orbit around stars and forming the structure of the universe.

One-Way Flow

A system or process in which resources or materials move in a single direction without recirculation or return to the starting point.