Chemistry, asked by harshadunes, 10 months ago

Read the text. Then answer the question. Complete the statement. One hundred years ago, the atmospheric concentration of carbon dioxide was about 300 ppm, or about 0.03% of the gas particles in the atmosphere. In 2015, the atmospheric concentration of carbon dioxide was roughly ______ppm.

Answers

Answered by meghatripathi077

Answer:

One hundred years ago, the atmospheric concentration of carbon dioxide was about 300 ppm, or about 0.03% of the gas particles in the atmosphere. In 2015, the atmospheric concentration of carbon dioxide was roughly 400 ppm

Answered by sonu7962

don't

know

Bhai

sorry

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