Examlex
The number of degrees of freedom associated with the unequal-variances t-test for comparing the means of two independent samples is n1 + n2 - 2.
Nonrenewable Fossil Fuel Energy
Energy sources like coal, oil, and natural gas that cannot be replenished in a short period and are extracted from the earth's crust.
Agriculture
The science and practice of cultivating plants and livestock, a fundamental sector that supplies the world with food, raw materials, and employment.
Solar Energy
Energy from the sun that is converted into thermal or electrical energy.
Human Labour
The work performed by humans that contributes to the production of goods and services in an economy.
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