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Note that your final mark will not be saved in the system.

12. Competition and adaptation Reorder

Running Total

Attempt

1 of 3

Drag and drop the boxes into the correct order.

We can estimate the number of plants in a habitat by taking a sample. Ecologists use metal frames called quadrats to do this.

A school field has an area of 600 square metres. Your group has 10 quadrat frames; each frame covers one square metre.

Put these steps in the correct order to describe how you would use these frames to estimate how many daisy plants live in the field.

Add up your results and work out the average. This is the average number of daisies in one square metre.
Multiply the average by 600 to get the estimated total for the whole field.
Put the quadrats down on the ground in their chosen places.
First divide the field into a grid.
Choose random coordinates from the grid to decide where to place your 10 quadrats.
Count the number of daisy plants in each quadrat.

This is your 1^st attempt! The marking algorithm gives more marks for getting the right order first time.

Pass Mark

70%