Biology, 29.03.2021 21:30 mcgowans348

Easing [2]
d) The table below shows some data on bird numbers.
Average Concentration of Neonicotinoid in
Surface water in ng/ml:0 10 20 30
Number of Visiting Birds:
12000 11988 11650 11600
Calculate the percentage decrease in the bird population when levels of neonicotinoids
reach 30ng/ml.
Show your working and give your answer to two decimal places.
[2]

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Easing [2]
d) The table below shows some data on bird numbers.
Average Concentration of...