What Is the Universe Mostly Made Of

question 31

Multiple Choice

What is the universe mostly made of?

• A) dark matter
• B) electromagnetic radiation
• C) ordinary matter, including intergalactic gas
• D) neutrinos
• E) None of the above.

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Definitions:

Phonemes

are the smallest units of sound in a language that can distinguish one word from another.

Prefixes

Word parts added to the beginning of a word to change its meaning or create a new word.

Universal Sound Units

The basic elements of phonology that are recognized across all human languages.

Morphemes

The smallest grammatical units in a language that carry meaning, which can be words or parts of words, such as prefixes or suffixes.