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Life on Earth: Diversification and Extinctions

4.826 ratings at Coursera

Overview

Discover the diversity of life on earth and how this biodiversity has been shaped by five mass extinction events that occurred in the distant past. Each week we interview scientists about how their research informs us about the biodiversity of our planet including the earliest life forms; fish and tetrapod diversification; the radiation of reptiles and the later domination of dinosaurs; and the rise of mammals. We focus on the five previous mass extinction events to explain this incredible story of life on earth. The fossil record reveals evidence of species that went extinct during each of these catastrophic events and the recovery thereafter when surviving biota diversified. Turning to the present and the Anthropocene period, we look at how human behaviour is negatively impacting Earth’s ecosystems. We conclude by considering the threat of the so-called ‘sixth extinction’, and we discuss ways in which we can mitigate the effects of climate change and the ‘sixth extinction”.

Syllabus 5

  1. Module 1: Beginnings of Life on Earth 2.5 hours

    We’ll be exploring the history of life on Earth and the origins of biodiversity by interviewing researchers who share insights about extinction event. In the first two billion years of Earth’s history, bacteria and bacteria alone ruled the world. Bacterial colonies are evident in the fossil record…

  2. Module 2: Life in the Marine Realm and Early Ecosystems on Land 1.5 hours

    Exploring fish and tetrapods diversification after the first and second extinction events.

  3. Module 3: The Biggest Mass Extinction Event 1 hour

    The catastrophic End Permian extinction event was the biggest extinction event of all time. This almost wiped out life on earth. We will look at before and after this End Permian Extinction event.

  4. Module 4: Most Recent Extinction Events 2.5 hours

    The 4th and 5th extinctions are very significant in influencing the development of life. We look initially at how dinosaurs come to dominate the earth for several million years.

  5. Module 5: A Possible Sixth Extinction? 2.5 hours

    In this final module, we explore what we know of the present day loss of biodiversity. We take a close look at some of the negative human impacts on environments and examine our ability to stop the rampant destruction.

Advantages and disadvantages

Advantages

  • Structured courses with graded quizzes, assignments and deadlines you can reset.
  • A shareable certificate from the university or company when you pay.
  • Financial aid is often approved for students in India (apply 15 days before you need it).
  • Self-paced: start any time.
  • A clear syllabus (5 parts) you can see before you start.

Disadvantages

  • Paid after a 7-day free trial (Coursera Plus or per course).
  • Some courses can be audited for free, but graded work and certificates need payment.

Some points apply to every course of this kind; see how we rank.

This course is paid. Here is how to take it for free

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  • Financial aid: If you cannot afford the fee for a certificate, you can apply for financial aid through the link on the course home page by filling out an application about your background and goals.

Taught by

  • Anusuya Chinsamy-TuranProfessor , Department of Biological Sciences

University of Cape Town is in Tier 3: good universities, respected companies, nonprofits and well-known teachers of our institution ranking (72/100).

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