What is the residence time of oxygen in the Earth's atmosphere?
A) 10 years
B) 100 years
C) 500 years
D) 5000 years
Answer: D
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A high concentration of oxygen-16 found in the ice caves of Antarctica and Greenland would indicate ____ at the time the ice was formed
A) cold air temperatures B) mild winters C) intense ultraviolet radiation D) the caves were under the ocean
Figure 3.9 Natural capital: The main components of an ecosystem are energy, chemicals, and organisms.
?
In the accompanying figure, notice that heat is lost by each component of the ecosystem, and that the sun is shown entering at only one point in the system. Explain how this is representative of the second law of thermodynamics.
What will be an ideal response?
What Japanese belief system is based on the sacred powers in every existing thing?
A) Daoism B) Confucianism C) Shinto D) Animism E) Daimyo
What is the contour interval on this map segment? What is the scale of this map?
What will be an ideal response?