1. Yes, human desire is the root cause of ozone depletion. Ozone depletion is different from global warming. Ozone depletion is the depletion of ozone layer and global warming is the increase in greenhouse gases.
2. Global climate change influence biodiversity because more temperature is melting the polar ice, so it is affected polar biodiversity. Also, due to irregular weather patterns, tropical and deciduous diversity is affected.
3. Environmental factors influence the phenophases of plants and animals, because due to irregular weather patterns, their normal phenophases is disturbed.