As waves reach water shallower than the wave base, they bunch up and wave height increases
a. True
b. False
Indicate whether the statement is true or false
True
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The fossil record is incomplete because
a. Not all fossils have been found. b. Some fossils have decomposed. c. Some life forms left no fossils. d. Some life forms have left no fossils and some have decomposed e. Not all fossils have been found, some have decomposted and some life forms have left no fossils.
An example of a positive feedback loop ________
A) is melting arctic snow exposing dark surfaces that heat up and cause further melting B) are predators eating most of their prey and then declining in numbers C) is a pond becoming more acidic as a result of pollution D) are birds migrating south in response to colder temperatures E) is a thermostat turning on the furnace as the temperature drops
The troposphere
A) is thickest at the equator. B) is a region of relatively constant temperature. C) ends at an elevation of about 18,000 to 20,000 feet. D) lies above the mesosphere. E) is derived from the Latin word for air.
The boiling point of liquid nitrogen is 77 K. What is this temperature on the Celsius scale?
A) 350°C B) 171°C C) 25°C D) -196°C