Nuclear power, solar power.
In general terms, there are two things we (mankind) can work on.1) Waste less energy. 2) Get access to new energy sources, and especially, to the so-called "renewable" energy sources, meaning, energy sources that will continue working for millions of years.
there are not just two electrical sources of energy there are lots but two could be solar and biomass
energy
Two sources of light energy include the sun and incandescent light bulbs.
The sun and the earth's interior are the two sources of energy that power earth's systems.
The two types of thermal energy sources are Geothermal and Thermal Energy
The sun and the earth's interior are the two sources of energy that power earth's systems.
The two main sources of energy gas and electricity.
The sun and the earth's interior are the two sources of energy that power earth's systems.
core, and the Sun.
Kinetic and electric.
The two primary energy sources that drive the food chain are sunlight and organic matter. Sunlight is needed for photosynthesis to produce plant matter, which is then consumed by animals for energy. Organic matter is essential for decomposers to break down dead organisms, recycling nutrients back into the ecosystem. Having two energy sources allows for a more efficient transfer of energy between trophic levels in the food chain, ensuring a balanced and sustainable ecosystem for all organisms.