(a(i))[3]
Describe and explain the pattern shown in Table 5.1.
(a(ii))[1]
State why the temperature should have been kept constant during this investigation.
(b(i))[1]
State the name of one other greenhouse gas.
(b(ii))[2]
State the name of the reagent used to test for carbon dioxide and the result of a positive test. reagent positive result
(c)[2]
State the names of two other substances used to improve crop yield that can cause pollution.