Question

what is the source of almost all energy on earth?
earths hot core
the sun
stored carbon
moving water

Explanation:

The Sun is the main source of energy for Earth. It provides light energy which is used in photosynthesis (for plants to make food). It also drives weather patterns (like wind due to uneven heating). Earth's hot core contributes some geothermal energy but it's a small portion compared to solar energy. Stored carbon (like fossil fuels) originally came from plants that used solar energy for photosynthesis. Moving water (like in hydro - power) gets its energy from the water cycle which is powered by the Sun (evaporation of water due to solar heat).

Answer:

the Sun