If you mean living processes, then the answer is Sunlight.
If you mean geological processes, then the answer is decay (nuclear fission) of radioactive isotopes in the Earth's core and Sunlight.
If you mean tidal processes, then the answer is kinetic (rotational) energy transfer.
The sun because it gives energy to every living thing on earth.
gravity
Solar energy
The ultimate source of energy for life processes comes from the sun. This energy enters the earth's food chains through photosynthesis.
None of those is really a "source" of energy; those are only ways in which energy is transported. Earth gets most of its energy from the Sun, through radiation.
It is the quantitative study of the energy relationships and energy conversions in biological systems. All organisms need free energy to keep themselves alive and functioning. The source of energy is just one; solar energy. Only plants use that energy directly. What the organisms use is the chemical energy in the form of foods. The very first conversion of solar energy into a chemical energy is the sugar molecule. On one side the conversion of solar energy into chemical energy with the help of photosynthesis happens, and on the other hand this photosynthesis makes it possible with the passage of time on earth to accumulate free oxygen in the earth's atmosphere making possible the evolution of respiration. Respiration is important for bioenergetics as it stores the energy to form a molecule ATP; adenosine triphosphate. This molecule is a link between catabolism and anabolisms. The process of photosynthesis is helpful in understanding the principles of energy conversion i.e. bioenergetics. Photosynthetic organisms and plants capture solar energy and synthesize organic compounds. It is a way of energy input. Energy stored in these organic compounds that are mainly sugars can be used later as a source of energy. Photosynthesis after respiration provides glycolysis, a major substrate, and later this glycolysis with further respiration provides energy in very controlled processes. So respiration and photosynthesis are the main processes dealing with bioenergetics.
Geology is the science that deals with the earth's physical structure, its components as well as the processes that act on it. A specialist in earth science is called a geologist.
Ultimately, sunshine is the energy source for most life.
The energy from the Sun, solar energy drives all the process important to life on Earth.
Solar energy drives all the processes important to life on Earth.
solar energy
The energy from the Sun, solar energy drives all the process important to life on Earth.
earth's interior
The heat from the centre of the Earth (fueled by nuclear fission and therefore the energy of an ancient supernova explosion) which drives tectonic convection processes.The heat from the Sun which drives the erosion processes.
the sun because it gives energy to every living thing on earth
the sun
The Sun
the sun
The sun.
Energy from the sun provides a large part of the earth's energy use, the other part coming from internal thermal energy. Sunlight makes vegetation grow through photosynthesis. It drives the earth's weather patterns through absorption of infrared energy. It can also generate electricity directly using photovoltaic panels.