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.
The type of microscope described above is the <span>phase contrast microscope. This microscope can produce high contrast images useful when observing transparent objects like living cells, microorganisms or tissue samples. </span><span> </span>
