. . . . "Ecosystems can range in size from tidal pools to the entire planet. Understanding the boundaries of various collections of organisms is the first step toward maintaining the balance to preserve them."@en . "Ecosystems can range in size from tidal pools to the entire planet. Understanding the boundaries of various collections of organisms is the first step toward maintaining the balance to preserve them." . . . . . . . "Ecosystems" . "Understanding ecosystems"@en . . . . . "Understanding ecosystems" . . . . . . . . .