Most of Earth's fresh water is located in
A) polar ice caps and glaciers.
B) groundwater.
C) rivers, lakes, and streams.
D) the atmosphere.
Answer: A
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How much of the Earth's surface is experiencing night at any time?
a. less than one-half, because of the tilt of the equator to the ecliptic plane b. more than one-half, because of the precession of the poles c. exactly one-half d. all of the night sky
In general, as stars go through the last stage of post-main sequence evolution, they will lose mass in the process of settling down into their final state. Explain the mass-loss process and the final state of the star for a low mass star
What will be an ideal response?
In the solar nebular theory, the dusty disk condensing around the Sun's equator became the ecliptic plane in which the planets then formed
Indicate whether the statement is true or false
A windowpane is half a centimeter thick and has an area of 2.0 m2 . The temperature difference between the inside and outside surfaces of the pane is 15°C. What is the rate of heat flow through this window? (Thermal conductivity for this glass is 0.84 W / m •°C.)
a. 5000 J/s c. 1300 J/s b. 2500 J/s d. 630 J/s