The main gas in soil is
What will be an ideal response?
Oxygen
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Earth's interior is warmed by ________ and Earth's surface is warmed by ________
A) radioactive processes; fusion in the Sun B) fission; fossil fuels C) volcanoes; solar energy D) terrestrial radiation; terrestrial radiation
Which of the following is not a reason why telescopes tend to be built on mountaintops that are relatively far from cities and are in regions with dry climates?
A) The thin air on mountaintops makes the glass in telescope mirrors less susceptible to warping. B) Being on a high mountain top means being relatively high in the atmosphere, which tends to limit turbulence. C) Dry regions mean less rain and clouds, and mountaintops in dry regions may even allow some infrared observations. D) Mountaintops far from cities are generally subject to less light pollution than locations nearer to cities.
The international standard time is called ______________
Fill in the blank(s) with correct word
The buoyant force occurs because the pressure in a fluid increases with depth
Indicate whether the statement is true or false