Students investigated the size of the population of Daphnia in the pond. This is the method used. 1. Collect 1 dm3 of pond water from near the edge of the pond. 2. Pour the water through a fine net. 3. Count the number of Daphnia caught in the net. 4. Repeat steps 1–3 four more times. The pond was a rectangular shape, measuring: • length = 2.5 metres • width = 1.5 metres • depth = 0.5 metres. Calculate the estimated number of Daphnia in the pond. Use your answer from part (d). Give your answer in standard form. Number of Daphnia in the pond – 7091

One thought on “Students investigated the size of the population of Daphnia in the pond. This is the method used. 1. Collect 1 dm3 of pond water from near the edge of the pond. 2. Pour the water through a fine net. 3. Count the number of Daphnia caught in the net. 4. Repeat steps 1–3 four more times. The pond was a rectangular shape, measuring: • length = 2.5 metres • width = 1.5 metres • depth = 0.5 metres. Calculate the estimated number of Daphnia in the pond. Use your answer from part (d). Give your answer in standard form. Number of Daphnia in the pond – 7091”

1. calculate the volume of the pond:
   Volume=2.5×1.5×0.5=1.875
   multiply by the value from part (d), which is 14,000:
   14,000×1.875=26,250
   Convert the final answer into standard form:
   26,250=2.625×104

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