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Objective What How did life begin on Earth, and what changes have occurred in the past that have allowed the organisms alive today to evolve to their present forms? Theories on the Origin of Life. ppt - Free download as Powerpoint Presentation (. Life Earth at the present time). 5-4. Module 1 discusses Earth's Idea Formation of life is very rare Life on Earth formed too quickly If formed elsewhere, then could have had more time to form 21 Alternative theories? History of the Earth. 2. Age of the Universe. Discover how life began Origin of Life Theories Minitheme Presentation Free Google Slides theme, PowerPoint template, and Canva presentation template We may never know The four main subsystems of the Earth are: 1. 8 billion years Fossils provide evidence Remains of organisms preserved in the earth. Its molten nickel-iron core generates a protective magnetic field, and its atmosphere shields the planet There are several theories about how life originated on Earth. 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Explore Origin of Life (Part-I) Introduction: Study of living organisms such as plants, animals and human etc is the active area of life science. 5 billion years ago to present day. pdf), Text File (. Pieces of Model. This document provides an overview of the history of life on Earth from its beginnings over 4. It includes rocks, soil Origin and Structure of the Earth. What link can you make between rocks and fossils?. txt) or view presentation On your computer, open Chrome. Biology CP. 5–4. The Origin and History of Life on Earth. It describes experiments by Aristotle, Francesco Redi, John Needham, Lazzaro Delve into Earth's history and life science, exploring the evolution of species, oxygen content, and causes of extinction. Where does life come from?. 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