(a(i))[2]
State any two ways tar affects the body.
(a(ii))[1]
State one conclusion that can be drawn from the limewater results.
(a(iii))[1]
State what the Universal Indicator results indicate about cigarette smoke.
(a(iv))[1]
Name one component of cigarette smoke, apart from tar and carbon monoxide, that was not examined in this investigation.
(b)[1]
Suggest how the results in Table 8.1 indicate that the filter was not very effective.
(c)[2]
Explain why cigarette smoke makes blood transport oxygen less effectively.