Answer:
Scientific theory differs from a guess or opinion because a scientific theory is a system of ideas that explains many related observation and is supported by a large body of evidence acquired through scientific investigation while guesses and opinions may not reliably predict an outcome, have evidence to back up the theory
Explanation:
The first one because some people might not believe that and others might believe that.
<span>The organisms in the soil food chain that don't obtain energy directly from plants are protozoa.
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