Confused and have questions? We’ve got answers.
With Chegg Study
, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors
From Biology-Online Dictionary | Biology-Online Dictionary
A convex lens of glass for producing heat by converging the sun's rays into a focus. Lighting a cigar with a sunglass.