Whois & Analysis for selina.com

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system.

These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows.

As ecosystems are defined by the network of interactions among organisms, and between organisms and their environment, they can be of any size but usually encompass specific, limited spaces (although some scientists say that the entire planet is an ecosystem).

The world is the planet Earth and all life upon it, including human civilization.

In a philosophical context, the world is the whole of the physical Universe, or an ontological world.

In a theological context, the world is the material or the profane sphere, as opposed to the celestial, spiritual, transcendent or sacred.

The "end of the world" refers to scenarios of the final end of human history, often in religious contexts.

Experience is the knowledge or mastery of an event or subject gained through involvement in or exposure to it.

Terms in philosophy such as "empirical knowledge" or "a posteriori knowledge" are used to refer to knowledge based on experience.

A person with considerable experience in a specific field can gain a reputation as an expert.

The concept of experience generally refers to know-how or procedural knowledge, rather than propositional knowledge: on-the-job training rather than book-learning.