It depends on what the topic of the essay is. If it's a character analysis, it's generally a good idea to put the character's name in the title. A comparison paper should have a binding link in the title. If your doing a research paper, such as American legal systems of the Great Depression and how it is reflected in "To Kill a Mockingbird", come up with a title for that. The topic at hand is essential in any title to an academic paper.
Because the scientists believed it looked like a cucumber and it was under the sea so therefore, a sea cucumber has derived from cucumber-like look.
the niche of an organism is it's role or lifestyle. what it's purpose is in it's habitat. dont get habitat and niche mixed up.
Sea Stars
Fossil range: Ordovician-Recent PreЄЄ
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"Asteroidea" from Ernst Haeckel'sKunstformen der Natur, 1904Scientific classificationKingdom:AnimaliaPhylum:EchinodermataSubphylum:AsterozoaClass:Asteroidea
De Blainville, 1830Orders
Brisingida (100 species[1])
Forcipulatida (300 species[1])
Paxillosida (255 species[1])
Notomyotida (75 species[1])
Spinulosida (120 species[1])
Valvatida (695 species[1])
Velatida (203 species[1])
Starfish or sea stars are echinoderms belonging to the class Asteroidea.[2] The names "starfish" and "sea star" essentially refer to members of the Class Asteroidea. However, common usage frequently finds "starfish" and "sea star" also applied to ophiuroids which are correctly referred to as "brittle stars" or "basket stars".
There are 2,000 living species of starfish that occur in all the world's oceans, including the Atlantic, Pacific, Indian as well as in the Arctic and the Southern Ocean (i.e., Antarctic) regions. Starfish occur across a broad depth range from the intertidal to abyssal depths (>6000 m).
Starfish are among the most familiar of marine animals and possess a number of widely known traits, such as regeneration and feeding on mussels. Starfish possess a wide diversity of body forms and feeding methods. The extent that Asteroidea can regenerate varies with individual species. Broadly speaking, starfish are opportunistic feeders, with several species having specialized feeding behavior, including suspension feeding and specialized predation on specific prey.
The Asteroidea occupy several important roles throughout ecology and biology. Sea stars, such as the Ochre sea star (Pisaster ochraceus) have become widely known as the example of thekeystone species concept in ecology. The tropical Crown of Thorns starfish (Acanthaster planci) are voracious predators of coral throughout the Indo-Pacific region. Other starfish, such as members of the Asterinidae are frequently used in developmental biology.
There is a hole in the front and back of the sea cucumber, the hole in the front is where it eats. The hole in the back is where it poops and breathes.... There are tentacles on their heads and they use them for picking up food.
Squid have a digestive system that is simple and contains the stomach, kidneys and an anus. Cilia help move food thru the Squids digestive system and out of the body.