Evolution

What is evolution?

• It is a change in environmental characteristics of a population over time through natural selection, and this results in a new species

• It is a change in inherited characteristics of a population over time through natural selection, and this results in a new species

• It is a random process that happens over a few years

Why is 'survival of the fittest' associated with natural selection?

• Within a population, individuals who have a selective advantage will survive, while others die out

• They are the most physically fit individuals within a population

• They are individuals with certain genes that give them no selective advantage

Which other scientist's work influenced Darwin's ideas?

• Lamarck

• Attenborough

• Wallace

Why was the theory of evolution through the process of natural selection controversial?

• People didn't like Darwin's ideas because they had heard them before

• It went against many religious beliefs

• It opposed many other scientists' ideas

How can new species be created?

• Genetic variation, natural selection and homeostasis

• Genetic variation, environmental variation and speciation

• Genetic variation, natural selection and speciation

Why are fossils used to prove evolution happens?

• Fossils are always created during any environmental conditions

• They are nice to look at

• They provide evidence of different species from a long time ago. These species may be now extinct

Why is the fossil record incomplete?

• As not all fossils have been found, they may have been damaged, or conditions may have prevented them from being created

• People sell fossils they have found

• Fossils take a long time to form

Why do animals become extinct?

• Animals become extinct because they can't find food

• They become extinct because of predators, disease, hunting and climate change

• Animals can't fly

How do bacteria become resistant to antibiotics?

• Bacteria have always been resistant to bacteria

• Mutations can lead to resistance, as these strains survive and reproduce rapidly

• If they are never treated with a particular antibiotic

How can antibiotic resistance be reduced?

• Never complete the full course of antibiotics prescribed by a doctor

• Take antibiotics at every opportunity possible, even for a viral infection

• Only take when really needed, complete the full course and use less in agriculture