Share Space and Human Impacts on Ecosystem
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What force is primarily responsible for governing the motion of planets around the Sun? a) Magnetism b) Gravity c) Friction d) Electrostatic force
B
Which of these characteristics of Earth is NOT essential for supporting life as we know it? a) Presence of liquid water b) Suitable distance from the Sun c) Presence of a magnetic field d) Composition of the atmosphere
C
Which of these is NOT a way that humans depend on ocean systems? a) Food source b) Climate regulation c) Transportation d) Source of fossil fuels
C
