During the history of the earth there have been periods when all the continents were together in a supercontinent
Indicate whether the statement is true or false
TRUE
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This cloud type is confined to the middle height range
cirrostratus cumulonimbus altostratus cirrus
Which of the following is NOT a physical environment where human beings are likely to avoid clustering?
A) hot lands B) dry lands C) high lands D) cold lands E) wet lands
Why will metamorphic rocks found in a contact metamorphism aureole be nonfoliated?
A) Because the main agent of metamorphism is heat, which will result in intergrown crystals B) Because the pressures involved with contact metamorphism destroy foliated crystals C) Because the temperatures associated with this are too low to alter the rock D) Because the velocity of the hydrothermal fluids will carry foliated materials away
The Nile River supports significant amounts of __________.
Fill in the blank(s) with the appropriate word(s).