Question 9
Scientists count the number of eagles in one area in different years.
The table shows their results.
| year | number of eagles |
| --- | --- |
| 1930 | 650 |
| 1970 | 60 |
| 2000 | 655 |
| 2016 | 2000 |
| 2020 | 3000 |
**(a)** Farmers start to spray crops with a toxic substance to kill weeds in 1950.
The farmers stop spraying the crops with the toxic substance in 1972.
Scientists think that the toxic substance the farmers use also kills eagles.
Tick (✓) to show if the scientists are correct.
yes ☐ no ☐
Explain your answer. Use information from the table.
The table shows their results.
| year | number of eagles |
| --- | --- |
| 1930 | 650 |
| 1970 | 60 |
| 2000 | 655 |
| 2016 | 2000 |
| 2020 | 3000 |
**(a)** Farmers start to spray crops with a toxic substance to kill weeds in 1950.
The farmers stop spraying the crops with the toxic substance in 1972.
Scientists think that the toxic substance the farmers use also kills eagles.
Tick (✓) to show if the scientists are correct.
yes ☐ no ☐
Explain your answer. Use information from the table.
