Final answer:
Renewable Energy is the sector of engineering and technology that focuses on reducing emissions and improving energy efficiency.
Step-by-step explanation:
The sector of engineering and technology that focuses on reducing emissions and improving energy efficiency is Renewable Energy. Renewable energy engineering involves the development and implementation of technologies that utilize sustainable and clean sources of energy such as solar power, wind power, and hydroelectric power. Engineers in this field work on designing and improving systems that reduce greenhouse gas emissions and contribute to a more environmentally-friendly energy sector.
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