The sun... study island cheaters...
Living systems follow the law of conservation of mass and energy by taking in nutrients and energy from their environment to sustain their growth, reproduction, and metabolism. Waste products like carbon dioxide and heat are released in the process to maintain the balance of mass and energy in the system. This ensures that the total mass and energy within the system remains constant over time.
in the chemical bonds of molecules
The movements of energy and nutrients through living systems are different because energy flows unidirectionally and cannot be recycled, while nutrients cycle within ecosystems and can be reused. Energy enters ecosystems through sunlight and is lost as heat, whereas nutrients are constantly recycled through biogeochemical processes.
Energy is the capacity to do work or cause change. It can exist in various forms such as kinetic, potential, thermal, or chemical energy. Energy is essential for all processes in the universe, including the functioning of living organisms and technological systems.
While I am not familar with the word itself, a break down of the word etymologically might give some hints: Photo (light), bio (life) energetics would indicate the field of study by which living systems directly utilize sunlight, perhaps through mechanisms like photosynthesis.
The energy requirements of living systems include being able to move. These living systems also need energy to eat and to hunt.
The sun, respiration, photosynthesis and food are all sources of energy for living things.
solar energy
in the chemical bonds of molecules
Living systems have the ability to grow, reproduce, respond to stimuli, and maintain homeostasis, whereas non-living systems do not possess these characteristics. Living systems also have metabolism, where they take in nutrients and convert them into energy for sustaining life, which non-living systems do not exhibit. Additionally, living systems have a complex organization of cells and tissues that work together to carry out various functions, which is not present in non-living systems.
In living systems, energy flows, and matter cycles. Hope this helps!
On Earth - it's the Sun.
Atp
Sunlight and energy stored in inorganic chemical compounds
Living systems follow the law of conservation of mass and energy by taking in nutrients and energy from their environment to sustain their growth, reproduction, and metabolism. Waste products like carbon dioxide and heat are released in the process to maintain the balance of mass and energy in the system. This ensures that the total mass and energy within the system remains constant over time.
Because otherwise entropy would take place. Energy is important for living systems to constantly organise what nature "wants" to disorganise.
Energy flows both ways between living systems and the physical environment.