Final answer:
Transitioning to sustainable energy sources like biofuels, solar, wind, and nuclear is essential for reducing dependency on fossil fuels.
Explanation:
Energy source transitions have been crucial for moving towards sustainability. The world has transitioned from relying heavily on fossil fuels to embracing biofuels, solar, wind, hydroenergy, geothermal, and nuclear sources for energy production. This shift is essential for reducing dependence on non-renewable resources and mitigating climate change.
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