Natural resources
Explication
The correct answer is 'Natural resources,' which are materials from the Earth used by humans, including metals, gases, plants, sunlight, and animals, as explicitly defined in the source.
Approximately 90 TWh
Explication
The Itaipu Dam, located on the border of Brazil and Paraguay, is the largest hydroelectric power station in the world, with an annual output of about 90 TWh, making it a significant source of renewable energy.
To supply energy until they are depleted
Explication
The main purpose of non-renewable resources is to supply energy, but they are finite and will eventually run out. Their role is to provide energy until depletion, which distinguishes them from renewable resources that are sustainable and infinite in supply.
1984
Explication
The Itaipu Dam was completed and began operation in 1984, marking a significant milestone in hydroelectric power development.
Renewable resources can be used repeatedly and are naturally replenished, while non-renewable resources are finite and formed over millions of years.
Explication
Renewable resources are naturally replenished on a human timescale, making them sustainable and usable repeatedly, such as wind or solar energy. Non-renewable resources, like coal or oil, are finite and take millions of years to form, so they deplete as they are used.
The scientific community/Scientists
Explication
The concept that fossil fuels are formed from remains of living organisms over millions of years is a scientific understanding widely accepted and attributed to the scientific community. It is not credited to a single individual but is a well-established scientific fact.
Economic uncertainty and community displacement
Explication
The depletion of natural resources, especially non-renewable ones, often leads to economic uncertainty due to loss of resource-based income and can cause social issues such as displacement of communities dependent on resource industries.
By increasing the size and capacity of turbines and optimizing their placement to harness stronger and more consistent winds
Explication
Technological advancements improve wind power viability by increasing turbine efficiency, which can be achieved through larger capacity turbines and optimized placement to harness stronger and more consistent winds, thereby maximizing energy output and making wind power more practical and effective.
Dam or reservoir
Explication
A dam or reservoir is a key component of hydroelectric power systems because it stores water at a height, allowing controlled water flow to turn turbines and generate electricity.
A process of generating electricity by harnessing sunlight using solar panels
Explication
Solar power is the process of harnessing sunlight through solar panels to generate electricity, making it a clean and renewable energy source.
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Natural resources — definition?
Materials provided by Earth for human use.
Biotic resources — examples?
Plants, animals, fossil fuels.
Abiotic resources — examples?
Metals like copper, minerals.
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