Systems of the Biosphere Answers

What is the main energy source that drives global climate?a.solarb.windc.mechanicald.heat

Earth’s systems interact through _______.a.humansb.glacial episodesc.feedback mechanismsd.none of the above

Human impact on one system leads to changes in more of Earth’s systems.

The atmosphere is unaffected by changes in the geosphere.

Which of the following is a function of the geosphere?a.facilitating the movement of water through spheres through transpirationb.providing a moderate, livable climatec.facilitating the process of photosynthesisd.serving as the interface between the other spheres

Which of the following is a function of the atmosphere? a. facilitating the process of rock formation b. providing a moderate, livable climate c. facilitating the process of photosynthesis d. serving as the interface between all spheres Please select the best answer from the choices provided

Glacial episodes are an example of _______.a.positive feedbackb.negative feedbackc.the “Daisy model”d.the Gaia hypothesis

What is the most likely effect a decrease of plant life in the biosphere would have on the atmosphere?a.A decrease in plant life would have no effect on the atmosphere.b.A decrease in plant life would cause carbon dioxide levels to increase and oxygen levels to decrease.c.A decrease in plant life would cause carbon dioxide levels to decrease and oxygen levels to increase.d.A decrease in plant life would cause an increase in all gases in the atmosphere.

Which of the following best explains why the biosphere is a key component of the Earth’s systems?a.The biosphere is a key component of the Earth’s systems because it is a common concept to many disciplines in science.b.The biosphere is a key component of the Earth’s systems because the seasonal cycles directly affect primary productivity.c.The biosphere is a key component of the Earth’s systems because it helps drive the other systems by interacting with and exchanging matter and energy with the other spheres.d.The biosphere is a key component of the Earth’s systems because it has evolved to create the chemical composition of the planet we know today.

Which system protects us from radiation and the vacuum of space? a.geosphereb.hydrospherec.atmosphered.biosphere