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* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Explain what a mutation is, how it can happen and what it causes. Explain what the word “variation” means and how it is caused. Give examples in your answer How are sustainability and biodiversity linked? Give three ways carbon can be released into the atmosphere Give two ways carbon can be removed from the atmosphere What is nitrogen used for in plants and animals? Explain how humans can cause the extinction of species a) Directly What is meant by “classification”? b) Name two types of evidence we can use to support the theory of evolution. Describe one loop of the nitrogen cycle using these words: Nitrogen-fixing, nitrates, soil, atmosphere, nitrogen, denitrifying, bacteria. Indirectly B3 Life on Earth Explain energy loss in food chains and how this limits the length of a food chain. List the FIVE factors that could lead to extinction (PACED) Add notes and diagrams to make it useful How can nitrogen get into the soil a) Naturally b) Via humans What are the similarities and differences between natural selection and selective breeding? Ultimately, where does all our energy come from? Give an example of an adaptation and how it has helped that plant or animal to survive. Draw a diagram to show how all hominids had a common ancestor. What are the four stages in natural selection? Explain each one. What three things were problems with Darwin’s theory of natural selection? How have they been overcome now? What are the similarities and differences between Lemarck and Darwin’s theories of evolution? What is a hominid? Give 2 ways in which big brains helped early humans to survive.