Four statistical metrics (Chaol, Chao2, ACE, and rarefaction) were used to estimate the total number of species of shelled micromollusks based on composition of nine benthic samples collected from the sublittoral zone off 'N,Vailea, Maui, Hawaii. There was a total of 250 species in the ...
What are monotremes unique mammals? Approximately how many different marine species are in existence? What are the characteristics that all mammals have in common? How many taxonomic groups are there in the classification of organisms? What caused the Late Devonian, End-Permian, End-Triassic,...
Do All Mollusks Have Shells? Lesson Summary Frequently Asked Questions What is the shell of a mollusk called? The outermost layer of a shell is called the periostracum. The shell of a mollusk is made from a structure called the mantle. In bivalves, there are two shells. In univalves, ...
Are there different types of algae depending on the type of saltwater? What is the difference between ecological diversity and biodiversity? All living organisms are classified into several levels. How many levels are there? What is a marine species with an outer layer which is similar to the ...
Amino acid deficiency syndromes are described in the articles about the specific amino acids. Frequently Asked Questions 1. How many amino acids form proteins: 20 or 21? 21 amino acids form proteins. Selenocysteine as the 21st proteinogenic amino acid has been discovered only recently and this is...
There are three species that grow to massive proportions: the giant (Architeuthis dux), the colossal (Mesonychoteuthis hamiltoni) and the jumbo, also known as Humboldt (Dosidicus gigas). While many squid are a few inches long, giant and colossal squid are enormous. The two types are ...
There are also indications that dinosaurs were becoming less diverse before the end of the Cretaceous period. But regardless of the cause, not everything on Earth died at the K-T boundary. Frogs, mollusks and crocodilians survived, and so did birds. Birds and Living Dinosaurs A cast of ...
Are you wondering what’s eating holes in your cabbage leaves? There are many potential culprits. Learn which pests might be chewing holes in your cabbages, what they look like, and tips to deal with them with gardening expert, Liessa Bowen. ...
题目Octopuses (章鱼) arc kind of like aliens.They are amazing in many ways.They have three hearts.They can walk,they can sw1 m,and they can drive themselves forward at high speed.They can change colour and copy what other animals do.They even know how to open screw...
In place of the protective shell found in many other mollusks, the octopus brandishes a startling array of defense mechanisms. One researcher who calls octopuses "the wizards of camouflage" goes so far as to say that chameleons are humdrum by comparison [source: Stewart]. Masters of disguise,...