MCQ
Which human activity is a threat to the Sundarbans mangrove ecosystem?
- AReforestation
- ✓Illegal hunting
- COrganic farming
- DWildlife conservation
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Column $I$
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Column $II$
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| $(a)$ |
Electrically neutral particle
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$(i)$ |
Copper
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| $(b)$ |
The charges acquired by a glass rod rubbed with silk cloth
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$(ii)$ |
Neutron
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| $(c)$ |
Unlike charges
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$(iii)$ |
Positive
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| $(d)$ |
Lightning rod
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$(iv)$ |
Attract each other
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