Question

define fossil. explain importance of fossils as proof of evolution

Answer 1

 A  fossil is the naturally preserved remains or traces of animals or plants that lived in the geologic past. There are two main types of fossils; body and trace. Body fossils include the remains of organisms that were once living and trace fossilsare the signs that organisms were present (i.e. footprints, tracks, trails, and burrows). 

Answer 2

Answer:

• Any  preserved  remains,  impression,  or trace  of  organisms that  lived  in the past  is called  fossil.  
• Examples include  bones,  shells,  exoskeletons,  stone  imprints  of animals, etc.
• The  time  of  death  of  a  plant  or animal can  be  calculated  by  measuring  the radioactivity  of C14  and  ratio  of  C14  to  C12  (nonradioactive  carbon) present   in  their  body  of  the fossil  organism. By  determining  the  age  fossil.  This called  carbon  dating.
• Once  the  age  of  fossil  been  determined,  it is  easy  to  gather the  information  about  other past  lived  organisms.  
• It  can  be  concluded  that  vertebrates  have  been  slowly  originated from  invertebrates.