What is the difference between the two kinds of optimists discussed in paragraphs 9-11? Based on the essay, which kind of optimist do you think the author is?

Autotrophs a.consume their food to get energy b.may use photosynthesis to gain energy c.are also called consumers d.cannot use solar energy

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a.precipitation b.erosion c.migration d.condensation

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?