Does red blood cell has cell wall?​

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

This is the process of making a prediction based on the results of prior observations of similar events.

What problem would a person most likely have if her kidney did not work correctly?