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Chapter 1, Problem 1CF

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Microbiology: A Systems Approach

4th Edition
Marjorie Kelly Cowan Professor
ISBN: 9780073402437

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Chapter
Section
BuyFindarrow_forward

Microbiology: A Systems Approach

4th Edition
Marjorie Kelly Cowan Professor
ISBN: 9780073402437
Summary Introduction

To describe:

The reason that climate scientists never realized that microbes actually caused nucleation of water droplets in clouds.

Concept introduction:

Bacteria are omnipresent. They are present in unimaginable environmental conditions. One such bacterium is Pseudomonas syringae which resides in clouds, inducing precipitation. These bacteria are found in the first stages of a hailstone, and they act as nucleating particles that aggregate water droplets. These aggregations of water droplets fall on earth as rain.

Explanation

Climate scientists never realized that microbes actually caused nucleation of water droplets in clouds because they might not have known that the microbes are too widely spread in the clouds in first place. While looking for nucleators in cloud samples, climate scientists must have used the filters that only trap fine dust particles, and not smaller particles, including microbial sized particles.

Conclusion

Climate scientists had never realized that microbes actually caused nucleation of water droplets in clouds because they must have filtered only the fine dust particles, and not much smaller microbial sized particles while looking for nucleators.

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