O-LevelBiologyCoordination & Response5090/11 · Oct/Nov 2023 · Q271 Mark
Which actions may lead to the contraction of hair erector muscles in the skin? 1 being sprayed with cold water 2 wearing a thick coat 3 entering a hot room 4 entering a cold room
A1 and 3
B1 and 4
C2 and 3
D2 and 4
✓ Correct answer
B: 1 and 4
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