The stratospheric ozone layer is important to ecosystems because it ________
A) absorbs and scatters UV light
B) keeps atmospheric gases balanced
C) keeps the temperature of Earth stable
D) provides the air we breathe
E) ensures lakes and oceans do not lose water
Answer: A
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Ten million years from now, the East African Rift valley system will most closely resemble the modern ________
A) Red Sea B) Appalachian Mountains C) Peru-Chile Trench D) San Andreas Fault
Erosion of the walls of a channel normally occurs on the outside curve of a meander
Indicate whether the statement is true or false
The specific heat of lead is 0.0380 cal/g·°C. If 47.0 calories of energy raised the temperature of a lead sample from 28.3°C to 30.1°C what is the mass of the sample?
A) 26 g B) 690 g C) 1.2 x 10^3 g D) 2.3 x 10^3 g
The North Shore Beach of Oahu is known as one of the world premier locations for what sport/activity, which was even practiced by the native Hawaii'ans before the coming of the Europeans?
A) Kayaking. B) Surfing. C) Deep-sea fishing. D) Snorkeling.