26. According to the passage, which of the following is NOT used to differentiate the types of radiation? (A) Mass. (B) Sunlight. (C) Energy. (D) Penetrability.

33. According to the passage, which of the following is a downside of Aeroponics? (A) Plants and the environment can easily be damaged. (B) Less electrical power and lights are generated. (C) A large quantity of waste water is constantly produced. (D) The equipment requires regular cleaning and maintenance.