What Are the Sources of Sulfur in the Atmosphere

question 11

Multiple Choice

What are the sources of sulfur in the atmosphere?

• A) Mostly transportation modes, such as autos, trucks, and planes
• B) Decomposition and small amounts from pollution
• C) Natural and human sources, in equal amounts
• D) Mostly (over 90%) volcanoes and photosynthetic bacteria
• E) Volcanoes and hot springs, but mostly (about 75%) human activities such as burning coal

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Definitions:

Morphemes

The smallest grammatical units in a language that carry meaning, such as roots, prefixes, and suffixes.

Semantics

The branch of linguistics concerned with the meaning of words, phrases, sentences, and symbols in language.

Phonology

The study of how sounds function within a particular language or languages.

Semantics

The study of meaning in language, including the analysis of words, phrases, signs, and symbols.