Here is some information about household rubbish in 2006. About 6.8 million tonnes of household rubbish is recycled.
This is 27% of total household rubbish.
About 20.1 million tonnes of household rubbish could be recycled.
What percentage of household rubbish could be recycled?

seismic wave -

an elastic wave in the earth produced by an earthquake or other means.

explanation:

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the answer is option b.

explanation:

eutrophication happens when abundance supplements are available in oceanic biological systems, bringing about the expanded generation of vegetation and the resulting diminish in the oxygen levels of the water   eutrophication happens when there are abundance supplements in a waterway. this outcomes in plants having more sustenance and reproducing  more, here and there prompting more amphibian creature life also. eventually, this can decrease the oxygen level in the biological community.