Cells, like humans, cannot generate energy without locating a source in their environment.
All organisms have some affect on their environment. For example an organism may deplete their food source but then the population will die out or move on and the environment will recover. Humans are the only animals that control / manipulate the environment to suit themselves.
How pollution from one location can affect the environment far away from the source of pollution
The Sun.
Oil
Food we eat.
Solar Energy
Red algae are a source of food and food additives for humans.
It helps the body remove heat through sweating, and it also allows it to use water as an energy source.
It helps the body remove heat through sweating, and it also allows it to use water as an energy source.
Light does not have a temperature because it is a form of energy, not matter. However, the temperature of the source of light, such as the sun or a light bulb, can affect the surrounding environment. For example, a hotter light source can increase the temperature of a room, while a cooler light source may have a lesser impact on the environment.
The first renewable energy source used by humans was likely wood, as it was used for heating and cooking thousands of years ago.