Defining life is difficult as definitions are either too broad or too specific. The most common definition requires meeting seven criteria: growth, stimulus response, metabolism, homeostasis, reproduction, mutation, and autonomous movement. Archaea, animals, plants, fungi, and bacteria meet these criteria, but viruses and prions do not. Specific criteria may cause classification problems if life is […]
The origin of life is estimated to have occurred between 4.4 and 2.7 billion years ago. The true origin is uncertain, with some suggesting it may be found in stromalites or evidence from the Isua supercrustal belt. The Miller-Urey experiment and Sidney Fox’s research provide insight into how basic organic monomers and protocells may have […]
Metaphors for life include a race, a classroom, and a journey. The race metaphor is seen as cynical and unrewarding, while the classroom metaphor emphasizes learning and growth. The journey metaphor is the most commonly used, with life seen as a series of new experiences and adventures. A metaphor is a figure of speech in […]
Parents struggle to explain the facts of life to their children without causing emotional distress. While the most common understanding of life is an individual’s time from birth to death, it is also about how life continues through offspring. Children are fascinated by the miracle of procreation and seek messy answers to their questions. The […]
Life poetry captures common experiences and emotions, often with minimal narrative descriptions. Topics include love, mortality, and perseverance. The structure is flexible, with the goal of expressing emotions in a lyrical style. Effective life poetry elicits empathy and can leave lasting impressions on readers. Poetry of life is a type of writing in which the […]
