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Download • I can: • State that a biome is a geographical region of the planet
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I can: State that a biome is a geographical region of the planet that contains distinctive communities of flora and fauna. State that each biome is characterised by a distinctive climate. State that flora is the name given to the characteristic types of plants found in the biome. State that fauna are the characteristic types of animals found in the biome. State that a biome is a group of connected ecosystems. State that biomes can be found on land and in water. State that examples of biomes are forest, desert, grassland, tundra, freshwater and marine. State that the global distribution ofbiomes is influenced by abiotic factors . State that the abiotic factors that influence the distribution of biomes are temperature and rainfall. State that the population is all the organisms of one type of species in an ecosystem State that a community is all the plants and animals living in the ecosystem State that the habitat is the place where the organisms live. State that the community and the habitat are influenced by non-living or physical factors called abiotic factors. State that an ecosystem is made up of one or several habitats and the community of organisms that live there State that there are many habitats in an ecosystem. State examples of abiotic (non-living) factors that interact with the community include oxygen concentration, light intensity, temperature and pH. State that ecosystems need plants as the source of food and oxygen. State that ecosystems need animals to disperse seeds. State htat a niche is the role and organism plays in an ecosystem. State that the niche is the use the organism makes of the resources in the ecosystem and the interactions it makes with other organisms in the community including competition, parasitism and predation. Give examples of the resources that organisms make use of in the ecosystem, including light, temperature and nutrient availability. State that biotic factors are those that have a living origin. State that abiotic factors are those that are non-living and have a physical origin. State that grazing and predation are examples of biotic factors that affect biodiversity. State that pH and temperature are examples of abiotic factors that affect biodiversity State that high intensity grazing reduces biodiversity more plant species are eaten. State that moderate intensity grazing maintains biodiversity as it allows the less dominant plants to survive. State that low intensity grazing decreases biodiversity because vigorous plant species can outcompete less dominant plant species and hold them in check. State that high levels of predation decrease biodiversity as more animals are eaten. State that moderate levels of predation maintain biodiversity. State that low levels of predation reduce biodiversity because more dominant animals outcompete less dominant animals. State that acid rain damages plant leaves and indirectly reduces plant biodiversity. State that acid rain decreases the pH of freshwater and kills fish. State that acid rain may reduce biodiversity, indirectly as it can reduce the body weight of the fish, making them less able to compete. State that an increase in temperature can reduce biodiversity, as fish enzymes do not work optimally. State that an increase in temperature can reduce fish biodiversity due to a lack of oxygen in the water. State that exploitation means to remove resources from an ecosystem. State that over-hunting, over-fishing and over-grazing are ways that humans exploit the ecosystem. State that over-exploitation has reduced biodiversity. State that humans have caused habitat destruction, which has reduced biodiversity. State that North American signal crayfish is an introduced species that has caused the native species of white-clawed crayfish to become endangered. Sate that Japanese knotweed is an introduced species that outcompetes native species. State that pollution is anything that is added to the ecosystem that causes harm. State that air and water can become polluted and biodiversity is reduced as a result. State that lichens are indicator species. State that lichens indicate air pollution due to sulphur dioxide.