Grade 12 Super Summary | Dr Tracey Classens Life Sciences ★ Grade 12 Life Sciences · CAPS ★ Super SummaryRevision Hub Flashcards, step-by-step processes, matching games and topic quizzes — everything from Dr Tracey’s revision notes in one interactive resource. 💊 Endocrine System 🧬 Reproduction 🧠 Nervous System ⚖️ Homeostasis 🌱 Plant Hormones 👁️ Senses […]
Biodiversity: Classification of Micro-organisms | Grade 11 Life Sciences ★ Grade 11 Life Sciences ★ The InvisibleMajority More than 99% of all species on Earth are too small to see with the naked eye. Micro-organisms were the only life on this planet for the first 3 billion years. They run the nitrogen cycle, drive photosynthesis
Senses | Grade 12 Life Sciences ★ Grade 12 Life Sciences ★ The Senses &Nervous System Every second, your eyes process 10 million colour combinations, your ears detect vibrations as small as a hydrogen atom’s diameter, and your skin maps an entire three-dimensional world of pressure, temperature and pain — all while you remain completely
html lang=”en”> Biodiversity: Animals | Grade 11 Life Sciences ★ Grade 11 Life Sciences ★ AnimalDiversity From a sponge that has no organs, to a whale that thinks and communicates — the animal kingdom spans an almost unbelievable range of complexity. Yet every animal, from the simplest to the most complex, shares a common ancestor
Reproduction in Plants | Grade 11 Life Sciences ★ Grade 11 Life Sciences ★ How PlantsMake More Plants From a single pollen grain travelling kilometres on the wind to a seed lying dormant for decades, plant reproduction is one of evolution’s most creative achievements. Plants cannot move — so they have evolved extraordinary strategies to
Biodiversity: Plants | Grade 11 Life Sciences ★ Grade 11 Life Sciences ★ The PlantKingdom Plants colonised the land 470 million years ago and transformed the planet. Every breath of oxygen you take was produced by a plant or cyanobacterium. Understanding plant diversity means tracing an evolutionary journey from simple algae in the sea to
Human Impact on the Environment: Current Crises | Grade 11 Life Sciences ★ Grade 11 Life Sciences ★ Planet UnderPressure Seven billion people. One planet. The scale of human impact on Earth’s systems has become the defining challenge of our time — from climate change and biodiversity loss to pollution and habitat destruction. Understanding the
Animal Nutrition: The Body’s Catering Company | Grade 11 Life Sciences ★ Grade 11 Life Sciences ★ The Body’sCatering Company From the moment food enters your mouth to the moment nutrients enter your bloodstream, a 9-metre production line is running. The catering company has one job: take complex food and break it down into molecules
Ecosystems: The Living Network | Grade 12 Life Sciences ★ Grade 12 Life Sciences ★ The LivingNetwork No organism lives in isolation. Every species is connected to dozens of others through feeding relationships, competition, and the cycling of nutrients. Ecosystems are these connections — and understanding them explains why removing one species can collapse a
Natural Selection: The Survival Audition | Grade 12 Life Sciences ★ Grade 12 Life Sciences ★ The SurvivalAudition Every generation, nature holds an audition. Only those with traits suited to the current environment make it through to reproduce. Over millions of years, this simple process — natural selection — has produced every species alive today.
