Air and water quality, climate, erosion, disease transmission, pest proliferation, and pollination are all examples of which category of ecosystem services, defined by the Millenium Ecosystem Assessment

Regulating

Explanation:

According to Millennium Ecosystem Assessment, there are four major categories of ecosystem services. These services include:

1. Provisioning

2. Regulating

3. Supporting

4. Cultural

The Regulating category is the category that consists of Air and water quality - Purification, climate, erosion, disease transmission, and pest proliferation - Biological control, and pollination.

The ecosystem services are services or functions rendered by the natural environment that ensure the environment is sustainable and healthy for human use.