-- from chemical fuel that it carried when it was launched
-- from an atomic reactor that it carried when it was launched
-- from photovoltaic panels deployed after launch that convert solar radiation to electrical energy
A rock needs sunlight and heat to obtain energy.
West Virginia obtain the money it needs to operate by razing taxes.
Plants obtain energy from the sun.
The organism will surely die if it does not obtain energy since it needs energy to carry out everyday functions.
Food.
by eating
Euglenophytes obtain energy through a process called photosynthesis, in which they use chloroplasts to convert sunlight into energy. They can also absorb nutrients through their cell membrane to supplement their energy needs when sunlight is not available.
It depends on the spacecraft.Some use radioisotope thermoelectric generators, some use solar panels and batteries, some use fuel cells. It really depends on the conditions the spacecraft is expected to operate under and the length of time it needs to remain active.
Consumers need to eat other organisms to obtain energy. Decomposers are like the recyclers of nature. They obtain energy for their own needs while returning simple molecules to the environment.
An omnivore gets the energy it needs to survive by consuming a variety of plant and animal sources. This diverse diet allows them to obtain essential nutrients and calories for their metabolic needs and overall health.
Several advantages; mainly:A human needs food, air, and protection. An unmanned craft needs none of these; its use of energy and other "extras" is much less than for a human.An unmanned craft can be sacrificed; there is no moral obligation to return it safely to Earth.In summary, all this makes an unmanned spacecraft much cheaper than a manned spacecraft.
Sponges primarily obtain their energy through filter feeding, where they capture small particles and plankton from the water. They rely on the nutrients and organic matter they filter from the water for their energy needs.