A food chain symbolizes the path of energy within an ecosystem: Primary producers such as green plants translate solar energy into carbohydrates, which are then tapped by primary and secondary consumers and ultimately recycled by decomposers. Each tier represents a different *trophic* level.
Marine biology. Marine biology is the scientific study of the plants, animals, and other organisms that live in the ocean. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy.
of 07. Marine Biology is the study of plants and animals that live in salt water. Lonnie Duka/The Image Bank/Getty Images. To learn about being a marine biologist, you should first know the definition of marine biology. Marine biology is the study of plants and animals that live in salt water. There are thousands of marine species, and marine biology may include the study of any of them, from tiny plankton to huge blue whales.