1st Question "What is in Year 9"
1st Response "Resources"
1st Question "Digest of Ideas"
1st Response "Tectonics and Disasters"
2nd Question "Science Principles"
1st Response "Waves"
- ⋯ Traveling disturbance through a Medium
1st Question "Terms"
4th Response "Type"
1st Question "includes"
1st Response "Longitudinal Pressure wave"
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