DP Biology (first assessment 2025)

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Question 22M.2.SL.TZ2.3b.ii

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Date May 2022 Marks available [Maximum mark: 2] Reference code 22M.2.SL.TZ2.3b.ii
Level SL Paper 2 Time zone TZ2
Command term Explain Question number b.ii Adapted from N/A
b.ii.
[Maximum mark: 2]
22M.2.SL.TZ2.3b.ii
(b.ii)

Explain the role of methane in climate change.

[2]

Markscheme
  1. methane is a greenhouse gas
    OR
    methane causes an increase in temperature of the atmosphere;
  2. methane is one of the most powerful greenhouse gases / more powerful than CO2;
  3. methane has a relatively short lifespan compared to CO2/decomposes to CO2;

Other verifiable sources.

Syllabus sections