What do you know about appearance of animals of materials? Give examples.
Answers
Explanation:
Classification of material on the basis of their appearance
On the basis of their appearance, all the materials are classified into two groups:
1 Materials having lustre or Shiny appearance
2 Material having no lustre or dull appearance
Those materials which have shiny appearance are said to have lustre.
For ex: Metals like gold, silver ,copper ,aluminium ,iron are the materials having shiny appearance
Some metals like iron, copper ,aluminium often lose their shine and appear dull due to the action of air and moisture on their surface. We should look for lustre only on the freshly cut surface of such metals or after rubbing their surface with a sand paper.
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Answer:
An animal product is any material derived from the body of an animal. Examples are fat, flesh, blood, milk, eggs, and lesser known products, such as isinglass and rennet. Animal by-products, as defined by the USDA, are products harvested or manufactured from livestock other than muscle meat.
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