Coral reefs, mangroves and seagrass beds, important components of tropical, shallow-water ecosystems, are severely impacted by the activities of man.
(Coral reefs, mangroves and seagrass beds, important components of tropical, shallow-water ecosystems; are severely impacted; by the activities of man)
Coral reefs, mangroves and seagrass beds, important components of tropical, shallow-water ecosystems
are severely impacted
by the activities of man