2.  If they can mate and produce fertile young

3.  Genes and environment

4.  Fossils and the similarities between living things

5.  Selecting which pigs (for example) to breed because they produce the right meat

6.  Survival of the fittest (and passing on your genes

7.  If animals compete with each other only the most successful will survive to pass on their genes

8.  Because people believed that the Bible was factually true

9.  A sudden random change in the genes

10.  Very simple – molecules that could copy themselves

11.  Different cells do different jobs but they need to be able to communicate

12.  Hormones and nervous system

13.  Humans have not evolved from chimps but we have both evolved from something else

14.  Between 1.5 and 4 million years ago – it walked upright

15.  By destroying or disrupting natural environments or food supplies

17.  To make protein

18.  To replace nitrogen and other minerals needed for growth

19.  Intensive – lots of fertiliser and pesticides  Organic – none of the above

20.  Chemicals used to kill animals and diseases that damage the crops

21.  Natural predators like ladybirds

22.  A process is sustainable if it can continue without harming the earth.

23.  Preservatives – stop it going off  Colours – make it look nice  Flavourings – make it taste nice  Emulsifiers & stabilisers – stop it separating

24.  Carbohydrates – for energy  Proteins – for growth and repair  Vitamins & minerals – to keep healthy  Fats – store energy

25.  So they can be dissolved and absorbed into the blood

26.  When someone has a reaction to a particular food eg peanuts.

27.  Broken down into urea

28.  Urea and excess water is removed and stored in the bladder

29.  Type 1 In younger people – controlled by insulin  Type 2 In older people – controlled by diet, medicine and sometimes insulin

30.  Being overweight or obesity

31.  Food standards agency – encourage people to eat healthily by promoting labelling and good practice

33.  Produce ionising radiation which can damage living tissues

34.  Alpha beta gamma

35.  Alpha – low penetration – high ionisation  Gamma – high penetration – low ionisation

36.  Irradiation – radiation goes through it  Contamination – contains something that is making radiation

37.  Time, how close you are (proximity) and type of radiation

38.  Breaks molecules like DNA and can lead to cancer

39.  Small dense nucleus (protons & neutrons) surrounded by cloud of electrons

40.  Atoms that have a different number of neutrons than normal – often radioactive

41.  The time taken for the radioactivity to drop to half its value

42.  Medical imaging, sterilising, treating cancer

43.  LLW/ILW/HLW – High/intermediate/low  It is sealed in glass or concrete and buried

44.  Splitting heavy elements like uranium to release heat energy

45.  Heat released 2. Water boiled 3. Steam turns turbines 4. Generator turned

46.  It will never run out and the environment will not be ruined

47.  Better safe than sorry

48.  Don’t produce CO2

49.  Don’t produce radioactive waste

50.  Produced by radioactive rocks – we should keep our houses well ventilated