Its construction is a miracle, molecules and atoms and sub-atomic particles having a party of purpose. The atom has a nucleus, positivity, and electrons for opposition. All life rises up out of successful tension between opposing components, making equilibrium. Atoms join to atoms, a molecule is born and hustles into line with its fellows.
There is reason to matter, and energy too. Energy enlivens matter, makes it animate, turns it conscious and even sentient. The animated object is alive by virtue of aspiration and interaction with its surroundings. Thus are beings born, given physiological systems, brains and agendas.
The energy comes from without and from within. Breath is automatic. Nourishment feeds the body, the brain tells it to move and the being spreads its energy around. Its environment is full with sources of energy, many of these challenging or hostile.
Creatures are complicated. The more intelligent the creature, the more complicated it may be. It has a central nervous system, a vertebrae, a complicated vascular and respiratory systems. It has sight and hearing and the ability to taste its environment. It has size and dimension and thought, and complicated mechanisms for evaluating situations and their constituent parts. No creature exists in a vacuum, but in relation to other beings and objects, in reference to time and space and all the associated boundaries.
A being, once informed by a certain level of comprehension and awareness, can not just exist. It is immediately motivated to do for itself, to seek food, shelter and security. Awareness is related to intelligence, and promotes it. Intelligence engaged forecasts danger and reward. No creature fully aware ever truly rests easy, for awareness includes knowledge of enemies and mortality.
Living creatures have form and shape, dimension and perspective. They have substance, which is expressed in idea, thought and action. Ideas formulated lead to constructs and ideologies, which affect choices and even alter personality. Human beings, thought to be the most intelligent of the species [if humans are to be believed], build worlds around ideas. They take their ideas to the experimental arena, and test them against 'reality.' This is really another word for collected and collective feedback from those who encounter these ideas.
Invariably, the feedback is filtered through the ideological and existential lens of the active pool of 'respondents.' An idea works if it is accepted, if it is absorbed. And there are different ways for this to occur, and they are not always by consent, as the premise assumes. Bodies and anti-bodies, force and counter-force, persuasion and bullying: many dynamics are at work in the creation of 'reality.'