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12. Paleontology, fossilization, astrobiology and carbon dating

State whether the statements are true or false and correct the following statement if false. If true then justify.

1. Casts are generally unfilled or may be partially filled with sediment.

The statement is

Moulds are generally unfilled or may be partially filled with sediment
Moulds are generally unfilled or may be partially filled with radioactive elements

2. Astrobiology formerly known as exobiology identifies extra terrestrial life in the universe.

The statement is

Astrobiology deals with the origin, evolution, and distribution of life in the universe
Astrobiology deals with the origin, evolution, and distribution of life in earth

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