Earth's Two Chief Energy Sources for All of Its Heat

question 46

Multiple Choice

Earth's two chief energy sources for all of its heat and geologic processes are .

• A) wind and ocean currents
• B) oil and coal
• C) tidal forces and wind
• D) external solar radiation and internal decay of naturally radioactive elements

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Definitions:

Steam Engine

A heat engine that performs mechanical work using steam as its working fluid, playing a crucial role in the Industrial Revolution by powering factories, trains, and ships.

Regressive Social Movements

Movements aiming to reverse social progress or return to previous societal conditions.

Reactionary

A political viewpoint characterized by opposition to progress or change and aiming to return to a previous state or condition.

Environmental Protection

A practice of safeguarding the natural environment on individual, organizational, or governmental levels, for the benefit of both the environment and humans.