Approximately % of the world's sewage is discharged untreated into the world's rivers and oceans.

Out of the following given choices;

15

7

24

95

The answer is 95%. The biggest contributors of this percentage are developing countries that do not have proper waste disposal  mechanisms such as well structured sewer systems.  It is estimated that 70% of industrial wastes in developing countries are disposed off untreated into waters where they end up in oceans through rain wash.

organisms that are both used in toothpaste as well as cause malaria are protista and monera.

answer: oof wait

explanation: