producer
In most food webs the Sun is the ultimate source of energy. Some food webs start with chemotrophs and in those cases the source of the energy are chemicals often from underwater volcanoes.
The producer (such as plants) has the most energy in an energy pyramid because they are able to convert sunlight into energy through photosynthesis. This allows them to start the energy flow in the ecosystem by producing their own food, which is then passed on to consumers at higher trophic levels.
I assume you mean the food. Most of the food we eat has food energy, which is a type of chemical energy.
Energy is most food does indeed come from sunlight. Producers are the most abundant food source and producers make their food from sunlight during photosynthesis.
From Food
Most energy people use comes from food.
Energy flow typically starts with the sun, which provides energy to plants through the process of photosynthesis. Plants then transfer this energy to animals that consume them, forming the basis of most food chains and energy flow in ecosystems.
All of your energy come from the food you eat.
FAT
Most of the energy in the box comes from the potential energy stored in the food molecules. When the food is digested and broken down, this potential energy is converted into chemical energy that can be used by the body for various functions and activities.
The primary source of energy for most ecosystems is sunlight. Through the process of photosynthesis, plants and other autotrophs convert solar energy into chemical energy, which forms the base of the food web. This energy is then transferred through various trophic levels as organisms consume one another. In some ecosystems, like deep-sea hydrothermal vent communities, chemosynthesis serves as an alternative energy source.
Most were hunter gatherer tribes (opportunistic) with small agricultural communities.