Question

practice
4.4 bioaccumul
the graph shows the quantities of microplastics found in the mud at the
bottom of the sea in four years between 1996 and 2008.
bar graph with x - axis time in years (1996, 2000, 2004, 2008) and y - axismean number of microplastic particles in kg of mud (0 - 160)
look at the graph.
a state the mean mass of microplastics found in 1 kg of mud
in 1996.
54

b calculate the increase in the mass of microplastics in 1 kg of
mud between 1996 and 2008.
show your working.

Explanation:

Step1: Find the value for 1996 and 2008

From the graph, in 1996, the mean number of micro - plastic particles in 1 kg of mud is 54. In 2008, the mean number of micro - plastic particles in 1 kg of mud is 142.

Step2: Calculate the increase

The formula for increase is \( \text{Increase}=\text{Value in 2008}-\text{Value in 1996}\). So, \(142 - 54\).

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Answer:

a. 54
b. 88