Which of the following represents a chemical change? select one: a. rocks being smoothed by rapid water movement b. the pink color of a rose c. iron's attraction to a magnet d. decomposition of stone due to acid rain

If the selected review was submitted in word format, what are the posterior probabilities of it being short, medium, or long? (round your answers to three decimal places.)

If you need to add 27.50 ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?

This is due today and i dont know how to do this. i will give brainiest! research the critical new developments in telescopes, and telescopic lenses. write a 200 word paper on the new developments, describing how these effects the telescopes, and in what environments these work best.