Urea is typically less toxic than ammonia. Ammonia is a direct irritant to the respiratory system and can cause damage upon inhalation, while urea is less likely to cause immediate harm. However, both substances can be harmful in high concentrations and should be handled with caution.
- The Marsh Crab uses cordgrass as a source of food. - The Periwinkle Snail eats the algae on the cordgrass and it uses it as a place to hide from predators. - The Seaside Sparrows use the cordgrass to make nests.