Question

how is a house useful to us?

Answer 1

House are useful to us because of following reasons
1. Protect us from the undesirable climate
2. Protect us from wild animals
3. Provide comfort

Answer 2

house is useful to us in many ways
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1)t protects us from sunlight, rain etc

2)we can store our valuable things safely in the home

3)our private matters can be kept confidential 

4)it protects us from pollution