what is an advantage and a disadvantage of using an oil shale?

Using it for what, oil extraction? Advantage, it is readily available. Disadvantage, it is low yield, and requires much mechanical force and energy to extract the oil.

"Oil shale has gained attention as an energy resource as the price of conventional sources of petroleum has risen, and as a way to secure independence from external suppliers of energy. The oil shale industry can have a negative impact on the surrounding environments, if the risks associated with it are not managed correctly. Environmental concerns raised over the extraction of shale oil have caused the oil shale industry in some countries to come to a halt. Opposition to the proposed Stuart Oil Shale Project in Australia resulted in its being put on hold in 2004.

Surface-mining of oil shale deposits has the same environmental impacts as those of open-pit mining. In addition, combustion and thermal processing generate waste material, and the atmospheric emissions include carbon dioxide, a major greenhouse gas. Experimental in-situ conversion processes and carbon capture and storage technologies may reduce some of these concerns in the future, but at the same time they may cause other problems, including groundwater pollution."

An advantage of using oil shale is that it offers a potentially abundant source of energy. Oil shale is a sedimentary rock that contains kerogen, a carbon-rich substance that can be converted into liquid fuels, similar to crude oil. This means that oil shale reserves can provide an alternative energy source that could reduce reliance on conventional oil and enhance energy security.

A disadvantage of using oil shale is the environmental impact of its extraction and processing. Extracting oil shale typically involves surface mining or underground heat treatment methods, both of which can result in significant disturbances to the environment and disruption of ecosystems. Additionally, the process of extracting oil from oil shale releases greenhouse gases and other pollutants. These environmental impacts make oil shale extraction and processing a subject of debate and concern.

To find this information, you can conduct a search on reputable websites, such as government agencies, scientific research publications, or energy-related organizations. Look for sources that provide objective and balanced information to get a comprehensive understanding of the advantages and disadvantages of using oil shale.