When you shake fish food into in an aquarium, you are contributing to a(n)
A) open system.
B) negative feedback system.
C) positive feedback system.
D) closed system.
Correct Answer:
Verified
Q3: A hypothesis is a(n)
A)conclusion based on results
Q6: Which of the following is an example
Q7: Which of the following clues would the
Q9: Which of the following topics of study
Q10: Once a hypothesis is rejected,
A)an observation cannot
Q11: The relationship between mountains and precipitation can
Q11: Geography is considered to be
A)a natural science.
B)social
Q15: The "sphere" that intersects with all of
Q16: A snowball that rolls down a hill,gradually
Q18: The difference between open and closed systems
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