About 70% of the Earth's surface is covered by marine ecosystems. Byestimates According to marine biologists, the biomass of microorganisms is about 9 ...
Deputy Minister of Water and Sanitation Isaac Sello Seitlholo tosses out samples of Salvinia minima ferns infected with black ...
For decades agricultural waste and manure was dumped into this lake, which has caused issues for the city today.
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