Asymbolic way to show chemical reaction is a chemica

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land

What are the proteins in connectivity tissues of your foot examples of?