These plants are essential to the ecosystem because they control erosion and provide a nursery ground for small animals vital to the food chain, such as crustaceans, mollusks, and small fish.
(These plants; are; essential to the ecosystem; because they control erosion and provide a nursery ground for small animals vital to the food chain, such as crustaceans, mollusks, and small fish) (they; control; erosion) (they; provide; a nursery ground for small animals vital to the food chain, such as crustaceans, mollusks, and small fish)
These plants they they
are control provide
essential to the ecosystem because they control erosion and provide a nursery ground for small animals vital to the food chain, such as crustaceans, mollusks, and small fish
erosion
a nursery ground for small animals vital to the food chain, such as crustaceans, mollusks, and small fish