GCSE · Combined Science
GCSE Combined Science quizzes
225 ready‑made quiz sets across 1 exam board. Pick your board's specification, open a unit and host a lesson's quiz live.
Table 4 · Choice
Which gas makes up ~78% of the air?
AOxygen
BNitrogen
CCarbon dioxide
DArgon
Answer · CLS-317
Which gas makes up ~78% of the air?
AOxygen
BNitrogen
CCarbon dioxide
DArgon
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