Level 4 · Science S4.3
Evolution and ecology
How living things change over many generations, and how they depend on each other and their surroundings.
Follow natural selection from variation to a changed population, and see the evidence for it in fossils and DNA. Learn how new species form and how others die out, and how scientists group living things. Then turn to ecology: the carbon and nitrogen cycles, ways to count populations, predators and prey, and what people do to biodiversity and what they can do to protect it.
8 chapters. Your place is kept on this device only.
You are ready for this book if
You can draw a food web with at least six living things.
- One step up S5.1 Molecules and cells
- This book S4.3 Evolution and ecology
- One step down S3.2 Ecosystems
Contents
- 1Natural selection, readunderstood
- 2Evidence for evolution, readunderstood
- 3New species and extinction, readunderstood
- 4Classification, readunderstood
- 5The carbon and nitrogen cycles, readunderstood
- 6Measuring populations, readunderstood
- 7Interdependence, readunderstood
- 8Biodiversity and people, readunderstood
Keep it, print it, pass it on
- One file for any phone
1.0 MB. Opens with no internet. Share it with anyone. - PDF to print
1.5 MB, 115 A4 pages. Answers at the back. Copies well in black and white. - EPUB for reading apps
161 KB. For e-readers and book apps.
For parents and teachers
For learners who can follow a written argument and have met food chains, habitats and genes. In many schools this fits learners of about 14 to 16, and older learners can use it as a reference. Each chapter takes two or three short sessions. A learner can work alone: every exercise has its answer and the reason for it. The Try it activities use paper, beans, string and sticks. Nothing is heated and nothing is tasted. Animals are counted with beans or paper slips, never live ones. For the outdoor counting, choose a safe place with the owner's leave, pick nothing and harm nothing, and mind sharp sticks and the sun. The chapter on antibiotics gives no doses: medicine is taken as a health worker says.
Strand: Living things. Written and drawn by attnom. Free to read, print and share.