Ecosystem services or nature services is a term that describes all the benefits that our ecosystems give to humans and other living organisms. Ecosystem services help to maintain human societies. They consist of natural resources and processes. Natural resources include food crops, trees and medicinal plants. Natural processes include groundwater filtering and the warmth and light provided by the Sun. 

ECOSYSTEM SERVICES

Service	Description
Production services	Goods and resources provided by the environment, such as edible natural resources, agricultural products, clean water, energy and raw materials.
Regulation services	Climate regulation, flood regulation, ground water formation, water cleaning, pathogen regulation, erosion regulation and pollination.
Cultural services	Recreation, mental and physical well-being, science, art and education.
Maintenance and conservation services	The diversity of genomes, species and ecosystems. The cycle of water and nutrients, the formation of soil, photosynthesis.

Natural resources are things that humans can gather for use from their natural environment. Natural resources can be divided into material and immaterial resources.

Material resources include things like forests, rocks, ores, agricultural soil and clean water. They can be possessed, bought and sold. They can be either renewable or non-renewable. 

Non-renewable resources include all resources that do not renew after use. These include all ores, minerals and rocks, oil, natural gas, coal and peat. 

Immaterial resources include all kinds of mental, spiritual and physical benefits that the environment gives for us humans. They cannot be bought or sold, and their value cannot be measured in money.

Some natural resources, such as solar radiation, oceanic currents and the wind are continuous. They can be used without them ever running out. They are examples of immaterial, renewable resources. Various kinds of ecosystem services, such as plant and animal growth, ground water filtering and plant pollination are also examples of renewable resources. 

Recyclable resources include all natural resources that can be used multiple times. For example, paper waste can be recycled and used to make a roll of toilet paper, whereas scrap metal from cars can be recycled for the construction of various things.