HORTICULTURE

Detailed explanation-1: -Conditions or processes of ecosystems that cannot be linked to the welfare of identifiable beneficiary groups are not ecosystem services. For example, changes in fish abundance in areas not used by humans and that have no direct or indirect effect on human benefits are not ecosystem services.

Detailed explanation-2: -Regulating services include pollination, decomposition, water purification, erosion and flood control, and carbon storage and climate regulation. As we interact and alter nature, the natural world has in turn altered us.

Detailed explanation-3: -Examples of ecosystem services include products such as food and water, regulation of floods, soil erosion and disease outbreaks, and non-material benefits such as recreational and spiritual benefits in natural areas.

Detailed explanation-4: -The Correct Answer is option 2 i.e. Aquariums. Aquariums is not a natural ecosystem.