What does a model of the carbon cycle show? The amount of Earth’s carbon increases.

The amount of Earth’s carbon is constant.

The amount of Earth’s carbon decreases.

The amount of Earth’s carbon cannot be determined.

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What did hunter gathers do to alter the environment?

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.