Sun is the source of energy. Energy cycle comes from it.
The energy source behind the water cycle is solar energy. It is the only energy which initiates water cycle.
Solar energy is the source of energy behind the carbon cycle.
The sun provides energy in the water cycle.
The sun provides the energy for the water cycle.
Source of energy is the sun.
The sun is the source of energy that creates the water cycle.
The matter of the food passes in a cycle; the energy does NOT. The energy comes from the Sun, is used here on Earth, and most of the energy is eventually radiated out into space. There is no cycle there.
Solar energy is the source of energy behind the carbon cycle.
Energy from the sun
Sun provides energy for earth's water cycle. It provides thermal energy for evaporation.
The energy cycle related to ecosystem is the transformation of bio-geochemical energy. This is able to link biotic and abiotic factors and cycle nutrients which forms the ecosystem.