<span>The two basic molds are: Expendable
mold and permanent mold. </span>
Molding is a
process where a rigid frame (mold) is being used to manufacture by shaping liquid
or pliable raw materials. However, molding is synonymous to casting; casting is
a process where a liquid metal is delivered into a mold which contains a hollow
cavity of the intended shape.
Expendable mold casting can be classify as
sand, plastics, plaster which make use of non-reusable or temporary molds while Permanent mold casting is a metal
casting process that use reusable molds.
On number one you could say dirt seeing as dirt is another word for earth because it makes up earth
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the 3rd. please follow Me......
Answer:
These factors are the "forces of evolution." There are four such forces: mutation, gene flow, genetic drift, and natural selection.
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