Others who can sign a death certificate<span> include a primary physician, an attending physician, a non-attending physician, a medical examiner, a nurse practitioner, a forensic pathologist or a coroner, but it varies according to state law. In Texas, for example, a justice of the peace can </span>sign<span>.
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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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<u>Answer:</u>
Fossils are the sources to learn the changes on the earth and how much it changed in these years. Its provides us with information about the existence of plant and animals in the past.
Actually, the fossils we found till the date are the ancestors of the plants and animals that live today. Moreover, some fossils of animals are easily identifiable since they exist till the date.
But there are fossils of animals that exist no longer in the earth. By studying and analyzing the fossils, one can tell how life on the earth has changed.
Also, we can learn about the ancestors of the plants and animals and how their long life existed on earth.
In other words, one can learn where and how those organisms were lived. So that we can know about our ancient environments.
