What type of soul is the most permeable

I believe you meant to say soil? The well-drained soil that gardeners work to achieve is a mixture of tiny particles of weathered rock and organic matter.

Gravel is the most permeable type, allowing water through almost unimpeded.

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.