pls help URGENT

I need help on about 3-5 questions, ty

1.The soft parts of animals which have become fossils are usually destroyed by:


oxygen in the air

bacteria

scavengers

chemical reactions

2.Petrified wood is made of:


minerals

cells

sediment

3.How do petrified fossilization differ from carbonized fossils?


Petrified fossils do not need carbon to be fossilized.

Petrified fossils need a lot of carbon in order to be come a fossil.

Petrified fossils are only made in desert type environment.

Petrified fossils dissolve all original parts including carbon.

4.The hollow impression of a dinosaur bone is:


an original-remains fossil

a cast

a mold

an imprint