In expository essays, the topic sentence needs to clearly and directly state the main concept, process, or issue that the paragraph will explain, define, or describe. It should summarize the core information of the paragraph, providing a framework for the reader.
The water cycle, a continuous natural process, involves the evaporation of water from Earth's surface, its condensation into clouds, subsequent precipitation, and eventual return to bodies of water or land, shaping the planet's climate and ecosystems.
This describes the fundamental steps of the water cycle and sets the stage for explaining how this process influences global weather patterns and supports life on Earth.
Quantum computing leverages the principles of quantum mechanics, allowing bits to exist in multiple states simultaneously, thereby enabling exponential computational speedups for certain complex problems compared to classical computers.
This introduces the core concept of quantum computing, emphasizing its区别 from classical computing through superposition and entanglement, and hints at the revolutionary potential it holds for cryptography, simulations, and optimization tasks.
Artificial intelligence, powered by machine learning algorithms, learns from vast datasets to mimic human cognitive functions such as pattern recognition, decision-making, and language understanding, transforming industries and daily life alike.
This outlines the essence of artificial intelligence and machine learning, highlighting their capacity to absorb and process diverse information, which forms the basis for discussing how AI is reshaping sectors from healthcare to transportation.