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As many more individuals of each species are born than can possibly survive; and as, consequently, there is a frequently recurring struggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the
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Richard Scarr
It is with great sadness that we have to announce the passing of Richard Scarr. He was always an enthusiastic biologist and a dedicated educator. After reading Biology at Kings College in London he taught...
Exam practice questions
Over the summer we have completed a full set of exam practice question pages, one for each topic. These pages are great for homework or revision. The Exam practice concept; The pages all have “exam practice”...
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See all"These Inthinking Biology activities are excellent! I was looking for something to break the monotony of a cells lesson so I tried the Cell types detective activity. Students loved it. Both the situation and the examples were brilliant"
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Jakarta Intercultural School
"Incredibly useful resource site - has probably saved me hundreds of hours planning. Plenty of links, worksheets and interactive resources that support the new IB course."
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Diocesan School for Girls
Subscriber comments
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Very sad news, really. I am very sad to hear that. Rest in peace, Richard I had an IB workshop with him; he was so cooperative
Richard Scarr -
Dear Lucinda, Thanks for your comment. I'll check the details on this activity page three, and update it over the weekend. Best regards, David
The endocrine system (2025) -
Dear Sonja, Bionichaos has a simulation of neurone diameter. I also found this
Action potentials (2025) test animation
David
Site authorThanks Jay, I've repaired this link
Eutrophication & Biomagnification (2025)