How to determine if you have mesothelioma<br>Recognize that most mesothelioma cases are linked with asbestos. Most cases of mesothelioma have been linked to asbestos exposure. Asbestos is a naturally occurring fiber found in rocks, minerals, and soil.

Can we draw the following conclusion?
Asbestos is a natural substance in nature.

OPT:
1). Yes.
2). It's impossible to say.
3). No.
1).