My doubts seem confirmed by the atmosphere that now prevails

Atmosephere now a days is not that much good we should polute less

Explanation:

thanks

you need to explain that more, your grammer just needs to be close to perfect.

the correct answer is c. he speculates on what might happen at given points in the future in a world without people. alan h. weisman is an american author, professor, and journalist. authors organize their information with a purpose. they present their ideas in an organized way. this is called text structure. weisman uses text structure so as to improve overall comprehension and to prove his points.