ASSIGNMENT (c) Copper(ll) ions (Cu2+) inhibit the function of a proportion of the chlorophyll a present in
single-celled, photosynthetic protoctists.
The concentration of functional chlorophyll a in these organisms was measured in two
different months of the same year in an unpolluted lake and in a lake polluted with
copper ions.
The results are shown in Table 3.1.
Lake
Table 3.1
Concentration of functional chlorophyll al ug dm-
Month A
Month B
3.45
0.24
1.79
0.24
Unpolluted
Polluted with copper ions
Describe and suggest explanations for the results shown in Table 3.1.

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the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.

answer; microsoft;