How do advanced integrated ponds for waste water treatment take advantage of solar energy?
A) by letting plants use it to consume waste
B) by using it to heat solar stills
C) by using it to power blowers
D) by using it to power sludge stirring devices
E) all of the above
Question 2
Iodine is the only non-metal that is a solid at room temperature.
Indicate whether the statement is true or false