In the United States, the leading cause of death is tobacco use
Indicate whether the statement is true or false
T
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Fossils are common because ____
A)bones are so easily preserved B)there are so many environments that are suitable for fossilization C)they are obvious once they are unearthed D)so many billions of organisms lived during the past E)fossilization takes place quickly, before decomposition progresses too far
The land-water heating difference that is related to the land's opaqueness is
A) specific heat. B) altitude. C) transparency. D) movement. E) evaporation.
There are websites that predict solar weather, or essentially the impact of the solar wind on earth (in one sense, our planet is within the outer atmosphere of the sun). How is this possible when the speed of light is a fixed quantity?
A) The solar weather is related to sunspots, and they only affect Earth when the sunspots are in line with the earth, so knowing the solar rotation speed, you can predict when sunspots are aimed at Earth. B) The solar weather effect on Earth depends largely on the earth's magnetic field and its interaction with Earth weather, so scientists predict variations in both. C) The solar wind does not travel at the speed of light, so it arrives much later than when a solar event is observed. D) The solar forecast is like weather forecasting on Earth; solar scientists observe phenomena as they form and grow on the sun, and predict their timing
________ are the waves of energy produced by an earthquake.
A. Tsunami B. Light C. Electrical D. Ocean E. Seismic