Human activities presently fix more nitrogen than all natural sources combined.

Name: Human activities presently fix more nitrogen than all natural sources combined.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

This statement is true, as human activities such as fertilizer use and industrial processes currently account for approximately 150 million tons of fixed nitrogen per year, while natural sources such as lightning and nitrogen-fixing bacteria contribute an estimated 130 million tons per year.

Human Activities Presently Fix More Nitrogen Than All Natural Sources