If the bright lines in the spectrum of oxygen are matched by lines in the dark-line spectrum of the sun, what does that indicate?

Which of the following is not a potential result of deforestation?

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?