Answer:
number three is the answer moderate
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:
Answer:
To decrease the algae
Explanation:
Acid lakes have more algae than other lakes
Answer:
there are two significant figures is the number 8400
Explanation:
