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
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
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%