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Resources are found in nature and make a better quality of life for . Soil, air, water, sunlight, and trees are all examples of resources that humans use every day, whether they know it or not. Without resources, humans could not live on the planet Earth.

Food, water, and sunlight are all examples of a . A natural resource is a material found in that is used by living things. Air, rocks, metals, , and salt are all natural resources.

Renewable resources are resources that can be replaced during a human . Trees, air, water, and even energy from the are renewable resources. Trees that are cut down can be replaced when seeds or baby trees are planted. from our bathtubs and sinks can be cleaned at treatment facilities so it can be ready to drink. Plants, wind, and rain can help clean the to make it safe to breathe even if it came out of a car or a factory.

Sometimes resources cannot be replaced after they are used. These are called . Once nonrenewable resources are all used up, nature be able to replace them during a human lifetime. Oil, natural gas, , and metals are all types of nonrenewable resources that we depend on without even thinking about it.

Coal is another example of a nonrenewable resource. Coal is made by nature deep within the . Humans mine the coal underground and use it as an source. Once humans have mined all the coal from inside Earth, there will be for us to depend on. Luckily, humans are finding new ways to harness other natural resources to do jobs that have mainly used coal in the past. For example, and water turbines are now being used to generate energy. They replace some of the need to burn coal.

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