Question

which causes highest emission of CO2 worldwide​

Answer 1

Answer:

The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation.

Explanation:

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Answer 2

Answer:

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$\huge{\red{\mathfrak{\boxed{\boxed{\bigstar{EMISSION}}}}}}$

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The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation. EPA tracks total U.S. emissions by publishing the Inventory of U.S. Greenhouse Gas Emissions and Sinks.