DP Biology (first assessment 2025)

Question 19M.2.SL.TZ2.3a

Date	May 2019	Marks available	[Maximum mark: 1]	Reference code	19M.2.SL.TZ2.3a
Level	SL	Paper	2	Time zone	TZ2
Command term	Calculate	Question number	a	Adapted from	N/A

[Maximum mark: 1]

19M.2.SL.TZ2.3a

(a)

Calculate the percentage increase in the use of liquid fuels from 1950 to 1975.

[1]

Markscheme

« $\frac{(2250 − 300) × 100}{300}$ = » 650 «%» ✔

Examiners report

A certain number provided reasonable answers considering the y-axis graduations, but too many had totally incorrect and unrealistic answers, showing that they could not calculate a percentage increase.

Syllabus sections

C. Interaction and interdependence » C4.2. Transfers of energy and matter » C4.2.19. Release of carbon dioxide into the atmosphere during combustion of biomass, peat, coal, oil and natural gas

Question 19M.2.SL.TZ2.3a

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