The Early Universe Was Composed Mainly of Which Two Elements

question 46

Multiple Choice

The early universe was composed mainly of which two elements?

• A) hydrogen and helium
• B) carbon and oxygen
• C) hydrogen and oxygen
• D) carbon and iron
• E) nitrogen and oxygen

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Definitions:

Capillaries

Tiny blood vessels that connect arteries and veins, facilitating the exchange of oxygen, nutrients, and waste between blood and tissues.

Filtration

A physical or mechanical process used to separate solid particles from fluids or gases by passing them through a filter medium.

ATP

Adenosine triphosphate, an energy-carrying molecule found in the cells of all living things, which captures chemical energy obtained from the breakdown of food molecules.

Diffusion

The process by which molecules move from an area of higher concentration to an area of lower concentration.