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ppk ppk
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Posts: 3561
12 years ago
To better comprehend the magnitude of current extinctions, it will be necessary to

A) identify more of the yet unknown species of organisms on Earth.
B) differentiate between plant extinction and animal extinction numbers.
C) monitor atmospheric carbon dioxide levels more closely.
D) use the average extinction rates of vertebrates as a baseline.
E) focus on identifying more species of mammals and birds.
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Educator
12 years ago
A) identify more of the yet unknown species of organisms on Earth.
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