1. Renewable energy and fuel source production
2. Industry and raw material compounds like timber, fabric, latex, biofuels, and pesticides
3. Many medicines (like aspirin or morphine) originate from living organisms
4. Wildlife and natural scenery is a source of income for many countries through tourism
5. Microorganisms are the source of many useful products, including antibiotics

Continuous monoculture results in soil depletion, reducing the diversity of soil nutrients.

A keystone species is an organism with a major role in maintaining the structure of an ecological community and that has a disproportionately large effect on its environment.

Decomposers like bacteria and fungi play a crucial role in breaking down organic waste material and recycling elements, such as carbon, nitrogen, sulfur, and phosphorus.

This makes these substances available to other organisms in the ecosystem.

1. The wild relatives of cultivated crops provide the genetic resources to widen the genetic diversity of cultivated crops, allowing new varieties of crops with desired traits to be bred
2. Genetic diversity provides a safeguard against diseases or pests
3. Many crop plants rely on insect pollinators to reproduce

1. Biodiversity enriches our environment and provides inspiration for musicians, artists, photographers, poets, and writers
2. Natural environments may help people recover from stress and injury

1. Food webs rely on multiple species, so declines in certain species can disrupt food chains
2. Losing keystone species destabilises ecosystems
3. Nutrient cycles depend on decomposers recycling matter