What are the primary characteristics of the terrestrial planets in our solar system?
The terrestrial planets ? Mercury, Venus, Earth, and Mars ? are all small and are composed of rock and metallic elements that condensed at the high temperatures of the inner solar nebula.
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Which of the following statements about the Andes Mountains is TRUE?
A) The Andes are non-volcanic in origin B) The Andes contain a wealth of precious minerals and metals, including gold and silver C) The Andes are among the oldest mountains on Earth D) The Andes run largely east-west across South America E) No Andean peak exceeds 20,000 feet
Brittle stars employ a unique evasive technique that involves detaching an arm if grabbed by a predator
Indicate whether the statement is true or false
When an object emits and absorbs energy at equal rates, its temperature increases
Indicate whether the statement is true or false
Seawater that exceeds the 35‰ average is termed
A) brackish. B) brine. C) mesohaline. D) freshwater.