The newest 20 of 51 written questions. Open one to see it on the real paper.
Suggest one reason why it is difficult to calculate the number of pangolins in Nigeria.
See it on the paper →Ascientist analyses the impact of salinisation on photosynthesis. The scientist uses this method. ° Grow four plants, A, B, C and D, of the same species in pots containing the same soil. * Water each plant twice a week with 1 dm? of salt water. ¢ Use a different concentration of salt water for each plant. ¢ — Analyse t...
See it on the paper →Suggest why salt is not added to the water for plant A.
See it on the paper →The scientist repeats the investigation with eight more plants. Explain the benefit of this.
See it on the paper →Use the data to write a conclusion about the effect of salt concentration on chlorophyll concentration.
See it on the paper →The scientist observes that the leaves of the plants turn brown with greater salt concentrations. The scientist uses this scale to record this observation. observation no brown some brown half brown and half green mostly brown Suggest one limitation of this method of recording observations.
See it on the paper →Use the data in the table to complete the pie chart and the key. 0 Key
See it on the paper →The pie chart was completed by most of the candidates. Many gained credit for the plotting and the use of a key.
— Examiner report, May/June 2025, 0680/13 Q8(b)(i) (Cambridge)
Most candidates scored full credit with accurate plotting of the two values with a reasonably neat line joining them. There were a few responses where the plots were clearly connected by hand, or connected incorrectly.
— Examiner report, May/June 2025, 0680/21 Q2(b)(i) (Cambridge)
Almost all responses interpreted the graph correctly and selected 2020.
— Examiner report, May/June 2025, 0680/22 Q2(a)(i) (Cambridge)
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Complete the line graph using the data in this table. year number of pilot whales caught 2004 1000 2005 300
Circle the year with the greatest mass of lemons sold to other countries. (i)
See it on the paper →Name the month in 2021 with the greatest mass of lemons sold. (ii)
See it on the paper →Write a different conclusion for each of these tree rows: tree row tree row tree row 5.
See it on the paper →Name the measuring instrument used to record mass. (i)
See it on the paper →Draw a suitable table the farmer can use to record: • • the mass of lemon flesh the thickness of lemon skin.
See it on the paper →Use column 1 to identify one limitation with the investigation.
See it on the paper →Use column 2 to identify one error in how the data is recorded in this column.
See it on the paper →Explain why the scientist includes pots with soil in this investigation.
See it on the paper →Suggest three factors the scientist should keep the same in this investigation.
See it on the paper →Write two suitable conclusions for this investigation.
See it on the paper →The scientist wants to use genetic modification (GM) to produce a grass that is resistant to insect pests. Describe how the scientist uses GM to produce grass that is resistant to insect pests.
See it on the paper →Suggest how bioremediation can be used to restore this mine.
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