By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments.
Answer: Glucose, fructose, and galactose each has twice the number of hydrogen atoms as the number of oxygen atoms.
Explanation: I hope this help
Matter can be recycled, but energy cannot. Also, only 10% of the energy is passed through each trophic level.
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