An example of biotic component in nature is:
A.Cells
B.Organic molecules
C.Plants
D.All of the above

Hint: The ecosystem is composed of two types of components, biotic and abiotic. Biotic components are the living parts of nature.

Complete step by step answer:
-Living organisms interact amongst themselves and with the physical environment. This is called an ecosystem. There are different types of ecosystems. The biosphere is a global ecosystem. Ecosystems are divided into smaller forms.
-Ecology or environmental biology is the field that studies the complex set of relationships between the living organisms and their surrounding environment. This field covers things like global warming, environmental pollution, plant and animal extinctions etc.
-Abiotic components of nature include wind, water, soil, temperature, etc. These components influence the behavior and life of the biotic components of nature. The sum total of biotic and abiotic components is called ecosystem.
-Biotic components, or biotic factors, are the living components that affect other organisms or shape the ecosystem. This includes animals that consume other organisms within their ecosystem, and the organism that is being consumed. Biotic factors include human influence, pathogens, and disease outbreaks. Each biotic factor needs the proper amount of energy and nutrition to function on a daily basis.
Organic molecules are also a part of biotic components of nature.
Hence, all the given options are correct.

So, the answer would be (D).

Note:
-The impact of biotic and abiotic components of nature on each other results in the various changes in the ecosystem.