Answer:
Petroleum and Natural Gas
Explanation:
Algeria relies heavily on crude oil to keep its economy going It neglects the other industries and causes a sensitive and unstable economy.
As it relied on Natural Gas and Petroleum.
Economic challenges are known to be as the challenge which includes high inflation which can basically to be known as a serious problem in a country.
Economic issue means any issue that basically creates a new or rising financial liability upon the municipal employer which might include salaries, overtime pay various type of the sick leave, payments in lieu of the person of sick leave usage, vacations as and when required and also include High rates of unemployment or underemployment in a country over a period.
In general terms, one can divide economic indicators in three categories: leading, coincident, or basically lagging. One can generally research about the overall economic conditions occurring in the future, present, and past Scarcity, unlimited wants as and when required and needs are also known to be as the some economic challenges in a country over the period of the time.
Therefore natural gas and petroleum is correct.
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