Answer: Sea stars move using a water vascular system. Water comes into the system via the madreporite. It is then circulated from the stone canal to the ring canal and into the radial canals.
Explanation: The radial canals carry water to the ampullae and provide suction to the tube feet.
Answer:
D- well
Explanation:
thats where we also access watrer
Interfacial adhesion and surface bioactivity of anodized titanium modified with SiON and SiONP surface coatings, The statement is correct.
<h3>what is adhesion ?</h3>
Adhesion is a type of attraction between two dissimilar phases, the theory of adhesion can be up two types mechanical interlocking and physical and chemical bonding and it is a combination of three methods.
Mechanical interlocking means when two dissimilar phases interact with one another by mechanical forces, requires a rough surface where the other material can enter.
Physical bonding includes van der Waals forces and the strength is rather weak and unable to contribute that much bonding strength.
Chemical bonding consist of covalent, ionic and metallic bonding which are more stronger than physical bonds and are responsible for cohesive forces.
chemical bonding between two dissimilar materials is more complicated due to the presence of few available bonding sites.
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