Question

7. Which of the following resources are either always available, or can be
renewed in a relatively short amount of time?
A. Renewable resources
B. Non-renewable resources
C. Natural resources
D. Renewable energy​

Answer 1

Answer:

non renewable resource is the resource either always available or can be renewed

Answer 2

C. NATURAL RESOURCES

Humans require air, water, food from plants and animals, sunlight, minerals, land, soil and fossil fuels to exist. All these useful raw materials are called natural resources.

• Natural resources naturally within environments (atmosphere, lithosphere, Biosphere & hydrosphere) that exist relatively undisturbed by mankind, in a natural form. A natural resource is often characterized by amounts of biodiversity existent in various ecosystems.
• Natural resources are those components of the environment that are inherently created by the environment for supporting life. These resources are very essential for sustaining life on earth.

1. Biotic resources are obtained from the biosphere, such as forests and their products, animals, birds and their products, fish, and other marine organisms.
2. Abiotic resources include non-living things like micronutrients & macronutrients.  
3. Renewable resources are ones that can be replenished or reproduced easily. Some of them, like sunlight, air, wind, etc., are continuously available and their quantity is not affected by human consumption. Many renewable resources can be depleted by human use, but may also be replenished, thus maintaining a flow. Some of these, like agricultural crops, take a short time for renewal, and others like water, forests take a comparatively longer time.
4. Non-renewable resources are formed over very long geological periods. Minerals and fossil fuels are included in this category. Since their rate of formation is extremely slow, they cannot be replenished once they get depleted.
5. Those resources which are present in unlimited quantity in nature and are not likely to be exhausted easily by human activity are inexhaustible natural resources. e.g. – sunlight, air, etc.
6. The amount of these resources is limited. They can be exhausted by human activity in the long run. E.g. coal, petroleum, natural gas, etc.