1. B3 Life on Earth Explain what a mutation is
Explain what the word “variation” means and how it is caused.
What is biodiversity?
How can carbon be released into the atmosphere
How is carbon removed from the atmosphere
What are the three main reasons for a species becoming extinct.
What is nitrogen used for in plants and animals?
Name two types of evidence we can use to support the theory of evolution.
What is the definition of a species?
Explain how mayfly nymphs can be used to measure environmental change.
Describe the process of natural selection. B3
Life on Earth
Find Someone who . . .
How can nitrogen get into the soil
Naturally
Via humans
Explain how either a polar bear or a cactus is adapted to its environment.
What are the similarities and differences between natural selection and selective breeding?
Describe how humans can be directly and indirectly responsible for extinction
Ultimately, where does all our energy come from?
What is interdependence?
Give three ways in which energy is removed at each stage in a food chain.
Give one reason why Lamarck’s theory was rejected in favour of Darwin’s theory.
Explain how evolution could lead to the formation of a new species.
How do scientists use DNA evidence to show evolution?