Aim: To find out if volume affects time it takes to boil - As the volume of water increases the time it takes to boil also increases. Bonus question: Could you say As the time it takes to boil increases the volume of water increases? Why or why not, Aim: to investigate how long it takes bacteria to grow - Bacteria start to grow within one hour and growth continues to increase until 3 hours. Bonus question: Why could you not say growth continues to increase as time increases (forever)?, Aim: To investigate if pH affects the number of tadpoles - As the pH of the water decreases, the number of tadpoles increases. Bonus question: Would you use a bar graph or line graph to present this data?, Aim: To investigate the effect of soil temperature on seed germination - When temperature increases, the number of seeds that germinate also increases, Aim: To find out if the mass of fertiliser affects the growth of peppers - As the mass of fertiliser increases, the number of peppers that grow increases. Bonus question: Which factors would you have to keep constant for this experiment?,

Drawing valid conclusions

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