Question 14
This question is about types of soil and how well plants grow.
**(b)** Mia and Blessy compare two types of soil to find out which is best for growing plants from seeds.
They:
- put soil type **A** in one container
- put soil type **B** in a different container
- sprinkle seeds onto each soil
- count how many seeds grow after two weeks.
Their investigation is **not** a fair test.
Suggest **two** ways to improve their investigation to make it a fair test.
Use the diagram to help you.
**(b)** Mia and Blessy compare two types of soil to find out which is best for growing plants from seeds.
They:
- put soil type **A** in one container
- put soil type **B** in a different container
- sprinkle seeds onto each soil
- count how many seeds grow after two weeks.
Their investigation is **not** a fair test.
Suggest **two** ways to improve their investigation to make it a fair test.
Use the diagram to help you.
