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What is the system that permits movement and fixation to echinoderms?
The system that allows movement and fixation to substrates in echinoderms is known as the ambulacral system. In these animals water enters by a structure called madreporite, passes by channels and reaches the ambulacral feet in the undersurface of the body. In the ambulacral region in contact with the substrate, there are tube feet filled and emptied by water therefore acting as suckers
what is welfare in biology
CENSUS - Counting by government of each decade is called census. POPUL A TIO N OF WORLD - In 2000 - 6.1 billion. In children birth per day - 3,36,960 Popu
Q. Of what units are the nucleic acids constituted? What are chemical entities that compose that unit? The Nucleic acids are formed by sequences of nucleotides. Nucleotides
Define two major aspects of nutrition economics? There are two major aspects of nutrition economics. These aspects are: 1) Quantities of food commodities and their developme
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In what order did the four phyla of protazoa evolve and why in this order?
Define Modification of Carbohydrate Intake for Specific Disorder? In our daily diet almost 60-7096' of energy is contributed by carbohydrates. Majority of them are comprised of
what is feeding mechanism
Which are the organs of the excretory system? The excretory system is produced of kidneys (two), ureters (two), bladder and urethra. The Excretory System - Image Diversity:
Explain the Combating drug-resistant diseases? The growth of drug-resistant strains of disease-causing bacteria threatens the current effectiveness of cheap antibiotics. This i
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