carbon
The sun.
The sun
Ultimately, most energy used on Earth comes from the radiation we receive from the Sun.
phytoplankton
The sun.
The sun.
The sun is the ultimate source of energy for almost all earth ecosystems.
The Sun
The sun is the ultimate source of all energy in Earth's ecosystems.
plants are not the ultimate source of energy. It is the sun which is the ultimate source of energy to this planet
the sun
The ultimate source of energy for plants is the sunlight which theycapture it from the sun. It is one of the main components ofphotosynthesis.
Solar energy.
The sun is the main sourse.
the sun
The ultimate source of the energy driving it is that coming from the Sun.
It is not the ultimate source of energy. It is the preferred source of energy because the body can use it directly without having to alter it. Maybe easy source of energy is a better way to say it.