Start learning →

Which pair of materials can both be recycled?

AAir and light
BGlass and paper
CSound and heat
DShadow and smoke
Answer & Solution
Correct answer: B. Glass and paper
Glass and paper are things that can be collected, cleaned and made into new products.
Practise this question with Quill — Olympiad (Class 4) →

Keep practising Our Environment

Browse all Our Environment questions for Olympiad (Class 4), or explore more Science topics.

Start a Our Environment lesson →
Related questions