ഒരു ആവാസവ്യവസ്ഥയിലെ ഉത്പാദകർ എന്നറിയപ്പെടുന്നത് ഏതു ?

'Rio +20' is a short name for

Which one of the following is a non-renewable resource?

Contribution to the manufacturing sector to environmental degradation primarily occurs during

1.procurement and use of natural resources

2.industrial processes and activities

3.product use and disposal

Select the correct answer using codes below