Biodiversity is the total variation between all living things and can be measured to help identify species that need to be supported. Warming 1905 defined ecology as the study of organisms in relation to. Jun 27, 2010 biodiversity is the variation of life forms within a given ecosystem, biome, or on the entire earth. Aqa science gcse biology 2011 specification by ann fullick. It refers to all the variety of life that can be found on earth plants, animals, fungi and microorganisms as well as to the communities that they form and the habitats in which they live. Everyday low prices and free delivery on eligible orders. Ccea gcse biology encourages students to develop their curiosity about the living world and provides insight into and experience of how science works. A common measure of this variety, called species richness, is the count of species in an area. We provide detailed revision materials for alevel biology students and teachers. The greater the number of different species in a habitat, the greater its biodiversity. A group of organisms with similar morphology, physiology and behaviour, which can interbreed to produce fertile offspring, and are reproductively isolated from another species by time, place or behaviour. The biodiversity found on earth today consists of many millions of distinct biological species. Revise biodiversity, ecology and ecosystems for your gcse biology exams. Species biodiversity number of different species and abundance of each species, genetic biodiversity genetic variation between members of a species and ecosystem diversity variety of different habitats in an ecosysten.
What is a sustainable development in biology terms. Biodiversity can be measured by looking at the number of different species and the number of individuals of each species within a given area. Human activities like changing land use, deforestation and peat bog destruction. Alevel biology does pretty much what it says on the tin. Biodiversity can relate to a range of habitats, from a small local habitat to the earth. From penguins to palm trees to bacteria, our planet is host to an aweinspiring diversity of organisms. Biodiversity aqa gcse biology single science revision aqa. A biology of numbers and difference by gaston, kevin isbn. The importance of this definition is that it draws. Modules b4, b5, b6 higher tier general certificate of secondary education mark scheme for june 2014. Conservation biology definition of conservation biology by. Canis genus, domesticus species genus has an upper case 1st letter.
Biodiversity gcse biology revision ccea bbc bitesize. These have been made according to the specifications h020, h420, h021, h421 and cover all the relevant topics for examination in mayjune. It can be studied using sampling techniques, and organisms can be classified according to. Choose your answers to the questions and click next to see the next set of questions. Biodiversity encompasses the genetic variety within each species and the variety of ecosystems that species create. Biodiversity is a term which describes every living organism within a single ecosystem or habitat, including numbers and diversity of species and all environmental aspects such as temperature, oxygen and carbon dioxide levels and climate. Classification kingdom phylum class order family genus species canis domesticus. Rapid environmental modifications typically cause extinctions. The rate of extinction of species is increasing and why this is likely to be caused by human interference. Human activities like changing land use, deforestation. Mark scheme for june 2015 oxford cambridge and rsa examinations. Scientists have variously estimated that there are from 3 to 30 million extant species, of which 2. Biology b as secondary resources edexcel biology b.
It also inspires, motivates and challenges students, enabling them to engage with biology in their everyday lives. Biology books contact here you will find the answers to the intext questions which occur in igcse biology 2nd edition and gcse biology 3rd edition by d. Increase in pollution and climate change, more space causing habitat loss, food causing deforestation and reducing species diversity and medicines more drugs will be needed from the environment, reducing biodiversity will be needed. Free practice questions for sat ii biology e biodiversity. Biodiversity edexcel gcse biology single science revision.
World summit on sustainable development 2002 was held in neet aipmt 2008 a argentina b south africa c brazil d sweden. Biodiversity, ecology and ecosystems gcse biology mme. Gcse biology biodiversity learning resources for adults, children, parents and teachers. Suitable for gcseigcseo level biologyscience courses or equivalent. A group of organisms with similar morphology, physiology and behaviour, which can interbreed to produce fertile offspring, and are reproductively isolated from another species by time, place or. These are the lessons created so far for the 2016 gcse biology course. Biodiversity is a measure of how many different species live in an ecosystem. Biology b as secondary resources edexcel biology b secondary re.
Ks4 ecology biodiversity and human interaction teachit. Jul 16, 2008 sustainable development is a pattern of resource use that aims to meet human needs while preserving the environment so that these needs can be met not only in the present, but in the indefinite future. Biodiversity and the effect of human interaction on ecosystems. B18 biodiversity and ecosystems exam question packs and mark schemes. The word itself is made up of the two smaller words, bio and diversity. Unit by2 biodiversity and physiology of body systems by clarke, andy isbn.
Biodiversity is the variation of life forms within a given ecosystem, biome, or on the entire earth. Bbc bitesize commissioning brief gcse biology ccea. Aqa gcse biology, paper 2, topic 6 inheritance, variation and evolution advantages of sexual reproduction. Buy aqa science gcse biology 2011 specification by ann fullick, lawrie ryan from waterstones today. Dive deep into earths breathtaking biodiversity, learn why this biodiversity is in peril today, and discover what you can do to protect the species and ecosystems that support human life on earth. Biodiversity is defined as the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part. Biodiversity is often used as a measure of the health of biological systems. Biodiversity, the variety of life found in a place on earth or, often, the total variety of life on earth. Modules b1, b2, b3 higher tier general certificate of secondary education mark scheme for june 2017. These differences are what make up the term biodiversity. Covers topics seen in a high school or firstyear college biology course. We also work with a number of leading publishers who publish textbooks and. World summit on sustainable development 2002 is also known as earth summit 2002.
This means the numbers of pangolin found in the wild are decreasing and if this continues it may become extinct. Biodiversity and conservation biology science khan academy. Ecotourism can be defined as environmentallyfriendly tourism. Kareivas testimony in the case helped protect the spotted owl from human encroachmentjust as conservation biology s ethic of intrinsic value had called forbut he was discomfited in the seattle courtroom by all the loggers sitting quietly in the rear, many with their kids on their laps. The topic looks at how all this diversity has come about through adaptation and natural selection and how this leads to evolution. Aqa gcse biology 8461 edexcel gcse biology 1bi0 ocr gateway biology a j247 ocr twenty first century science biology b j257 eduqas wjec biology. Ecology biodiversity and human interaction ks4gcse biology teaching resources. However, the term has as yet no precise definition in scientific terms. Aqa gcse 91 biology 1 paper 1 separate science past exam. Mackean, published by hodder education, london, uk.
Sustainable development is a pattern of resource use that aims to meet human needs while preserving the environment so that these needs can. Deforestation biodiversity and the effect of human. Biodiversity, land management, wastepollution creation and its management, maintaining. Why there are so many different species is considered first, with the concept of niche and adaptation explored. Biology draws on concepts from chemistry, math, and physics. Biodiversity definition, examples and threats biology.
Questions and answers on ecology biology discussion. Solved examples on biodiversity and conservation askiitians. If youre seeing this message, it means were having trouble loading external resources on our website. The topic focuses on biodiversity and the wealth of natural resources used by humans. This content is provided by the california academy of sciences. Biodiversity biodiversity higher biology revision bbc bitesize. Classification and biodiversity biodiversity is the total number and variety of species in a given area. This section covers topics of biodiversity and human impacts. The strict definition of biodiversity is the life differences or variations. The lessons have very little worksheets to save on paper, and are very discussion lead. Over 22,000 learners have used our materials to pass their exams. New aqa gcse specification ecology revision sheets teaching.
Click and collect from your local waterstones or get free uk delivery on orders over. Biodiversity is a measure of the variety of different species living in a habitat. Again, credit for the presentations and many of the notes to chris paine at bioknowledgy. Ecology revision sheets for the new aqa spec, covering adaptations, interdependence and competition and biodiversity and the effect of human interactions on ecosystems. List of books and articles about biodiversity online. Bbc bitesize commissioning brief gcse biology ccea revised. The convention on biological diversity gives a formal definition of. Modules b4, b5, b6 foundation tier general certificate of secondary education mark scheme for june 2017. Quizlet flashcards, activities and games help you improve your grades. Biodiversity can be measured globally or in smaller settings, such as ponds.