At first glance the sand seems barren and unproductive. After a while, if you are careful not to kick up sand, you might see tiny benthic communities of tube-building worms come alive as they sweep the passing nutrient rich waters with tentacles to capture food.
Source: tatoeba (6604363)
Sixty-five percent of U.S. estuaries and coastal water bodies are moderately to severely degraded by excessive nutrient inputs, which lead to algal blooms and low-oxygen (hypoxic) waters that can kill fish and seagrass and reduce essential fish habitats.
Source: tatoeba (6675695)
Plants' source of nutrients is the soil, and the most nutrient rich soil is detritus, a stew of decaying organic matter from a variety of sources.
Source: tatoeba (8160733)
The umbilical cord develops by the fifth week of embryonic development, replacing the yolk sac as the embryo's nutrient source.
Source: tatoeba (9013147)
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