TRUE OR FALSE
The atmosphere is a relatively thin layer of gases that form Earth’s outermost layer.
Mountains are an example of the biosphere.
The crust is less than 1% of the Earth’s mass.
Ponds are an example of the geosphere.
Earth’s four systems include: geosphere, atmosphere, biosphere, and lithosphere.
Answers: 3
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Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers
Answers: 3
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What is the ecological role of food chains and food webs
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Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.
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TRUE OR FALSE
The atmosphere is a relatively thin layer of gases that form Earth’s outermost layer....
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