How Is a Fossil Cast or Mould Formed

question 33

Multiple Choice

How is a fossil cast or mould formed?

• A) Silica fills in all open spaces in the original organic structure.
• B) Soft mud surrounds a broken dinosaur bone and hardens to a mudstone cast.
• C) An impression of the organism is formed by a thin film of carbon.
• D) A mineral such as quartz , calcite, pyrite, or apatite is precipitated in the space left by dissolution of an original shell or other hard part.

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Definitions:

Lab Areas

Designated spaces or rooms equipped for scientific experiments, research, and teaching in various scientific fields.

Autoclave

A machine used for sterilization by applying high pressure and steam.

Front Desk

The reception area of an office, hotel, or other business where guests are greeted and administrative tasks are handled.

Electronic Equipment

This term refers to devices that use electrical energy to perform a variety of functions, such as computing, telecommunication, or entertainment.