Scientists were successful in persuading policy- makers to act on the problem of CFCs and the
ozone layer, in part, because there was convincing
visual satellite imagery of the problem. What types
of evidence do you think will be the most
persuasive in prompting policy-makers to make
hard decisions about human-caused climate

change?

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rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

straight probes are used primarily for measuring flow as it is approaching the test area. its geometry allows the probe to be mounted so that it is in the direct line of airflow.