Not sure what this refers to; one energy source related to the ocean is getting energy from waves, another is tidal energy.
fossil fuels are the least costly for us to use.
Currently, human's conventional source of energy is fossil fuel.
Animals obtain their energy and carbon from the food they ingest. Carbohydrates and protein are a good source of carbon and energy.
FOOD
Animals obtain energy by what they eat. It is all a big cycle, the sun(main source of energy) gives energy to the grass which gives energy to the cow, though in smaller amounts.
Consumers mainly obtain energy from the food that they eat. This means that their source of energy will be from the producers.
Ocean Thermal power.Ocean Wave power.
The ammount of solar energy used in America is currently at 23%.
Sulfur-oxidizing bacteria are considered chemoautotrophs because they obtain energy by oxidizing sulfur compounds (chemical energy source) and use this energy to fix carbon dioxide to produce organic molecules (carbon source).
The primary energy source of mushrooms is organic matter, such as decaying plant material or wood. Mushrooms are decomposers, breaking down this organic matter to obtain energy for growth and reproduction.
Plants, algae, and some bacteria obtain their energy from photosynthesis, while certain bacteria and archaea species obtain their energy from chemosynthesis. Photosynthesis converts sunlight into energy, while chemosynthesis uses inorganic compounds as a source of energy.
The Sun. Second, the CMBR (C osmic M icrowave B ackground Radiation).