Question

An example of the one-way ecological cycle is
(A) carbon dioxide cycle
(B) water cycle
(C) energy cycle
(D) oxygen cycle

Answer 1

Hint: An example of the one-way ecological cycle is that which tells us about the way how power which is derived from the utilization of biological or chemical resources transfer from one individual to another.

Complete answer: At any given moment, trillions of atoms and molecules are circulating between the living and therefore the non-living world. Life’s processes (i.e. reproduction, growth, etc.) require that a continuous supply of energy and nutrients be introduced into the body. The cycle of energy relies on the flow of energy through different trophic levels in an ecosystem. Our ecosystem is usually maintained by the cycling energy and nutrients obtained from different external sources.

Additional Information:
At the very first trophic level, primary producers use solar power to produce organic material through photosynthesis.
The herbivores at the second trophic level, use the plants as food which provides the energy. An outsized part of this energy is employed for the metabolic functions of these animals like breathing, digesting food, supporting the growth of tissues, maintaining blood circulation and body temperature.
The carnivores at the subsequent trophic level, prey on the herbivores and derive energy for their sustenance and growth. If large predators are present, they represent still higher trophic levels, and that they prey on carnivores to urge energy. Thus, the various plants and animal species are linked to one another through food chains.
Decomposers which commonly known to include bacteria, fungi, molds, worms, and insects break down wastes and dead organisms, and return the nutrients to the soil, which is then taken up by the producers. Energy isn't recycled during decomposition, but it's released.

So, the correct answer is ‘energy cycle’.

Note: Many of us usually get confused between the energy cycle and biogeochemical cycle. Biogeochemical cycles commonly refer to the flow of such chemical elements and compounds between organisms and the physical environment.