Provisioning services are the tangible benefits that humans receive from ecosystems, such as food, water, and shelter. These services are essential for human survival and well-being.

Biodiversity is not a provisioning service because it is not a tangible benefit that humans receive from ecosystems. Provisioning services are the tangible benefits that humans receive from ecosystems, such as food, water, and shelter.

Food is the most important provisioning service for humans because it is essential for human survival. Humans cannot live without food, and they rely on ecosystems to provide them with food.

Humans get most of their food from agriculture, hunting and gathering, and fishing. Agriculture is the most important source of food for humans, but hunting and gathering and fishing are also important sources of food for many people around the world.

Humans get their water from a variety of sources, including rivers and lakes, groundwater, and rainwater. The relative importance of these sources varies depending on the location and climate.

Humans get their shelter from a variety of sources, including houses, apartments, and other buildings. The relative importance of these sources varies depending on the location and culture.

Provisioning services contribute to human well-being by providing food, water, and shelter, improving air quality, and regulating climate.

Provisioning services are threatened by a variety of factors, including climate change, pollution, and deforestation. Climate change is causing the Earth's climate to change, which is leading to changes in the distribution of plants and animals and the availability of water. Pollution is contaminating the air, water, and soil, which is making it difficult for plants and animals to survive. Deforestation is the clearing of forests, which is reducing the amount of land available for agriculture and forestry.

There are a number of things that can be done to protect provisioning services, including reducing our reliance on fossil fuels, protecting forests, and reducing pollution. Reducing our reliance on fossil fuels will help to reduce climate change. Protecting forests will help to ensure that we have a sustainable supply of food, water, and timber. Reducing pollution will help to improve air quality and water quality, which will make it easier for plants and animals to survive.

Forests provide a variety of provisioning services, including food, water, and timber. Forests are a source of food for many people around the world, including fruits, nuts, and seeds. Forests also help to regulate the water cycle and provide a source of clean water for many people. Finally, forests are a source of timber, which is used to build houses, furniture, and other products.

Oceans provide a variety of provisioning services, including fish, seafood, and salt. Fish and seafood are a major source of food for many people around the world. Salt is also an important resource that is used to preserve food and flavor food.

Agriculture provides a variety of provisioning services, including food, fiber, and fuel. Food is the most important provisioning service provided by agriculture, and it includes crops such as wheat, rice, and corn. Fiber is used to make clothing and other products, and it is produced by crops such as cotton and flax. Fuel is produced by crops such as sugarcane and soybeans.

There are a number of challenges to providing provisioning services in the future, including climate change, population growth, and pollution. Climate change is causing the Earth's climate to change, which is leading to changes in the distribution of plants and animals and the availability of water. Population growth is increasing the demand for food, water, and other resources. Pollution is contaminating the air, water, and soil, which is making it difficult for plants and animals to survive.

There are a number of ways that we can overcome the challenges to providing provisioning services in the future, including developing more sustainable agricultural practices, protecting forests and other ecosystems, and reducing our reliance on fossil fuels. Developing more sustainable agricultural practices will help to reduce the environmental impact of agriculture and increase the productivity of agriculture. Protecting forests and other ecosystems will help to ensure that we have a sustainable supply of food, water, and other resources. Reducing our reliance on fossil fuels will help to reduce climate change.