The earliest organic reefs are known from the Ordovician Period. Indicate whether the statement is true or false
F
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What is the study of organic microfossils called?
a. necrology b. palynology c. benthology d. pelipalology e. phylology
The albedo of Earth's surface is only about 4%, yet the combined albedo of Earth and its atmosphere is about 30%. Which set of conditions below best explains why this is so?
A) high albedo of clouds; low albedo of water B) high albedo of clouds; high albedo of water C) low albedo of clouds; low albedo of water D) low albedo of clouds; high albedo of water
Rainforests occupy approximately ________ of the world's land area, but represent about ________ of Earth's species
A) 7%; 50% B) 10%; 35% C) 2%; 12% D) 12%; 65%
Nuclear fusion is the changing of hydrogen and helium into heavier elements of carbon, oxygen, silicon, and iron in stars
Indicate whether the statement is true or false