Choose three types of fossils. describe their appearance and how they were formed.

Hello, user from 5 years ago!

Amber fossils happen when insects become trapped in tree resin, the tree resin preserves the insect.  They usually have a yellowish tint to them and contain the insect that was trapped.

Trace fossils are preserved records of life such as footprints or nests.  For example when an animal leaves a footprint and the mud the footprint was in turns into rock, it is preserved.  

Petrified fossils happen when the structure of animals buried underground are replaced with minerals.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus