What does metal content have to do with magma

What are two reasons for why a species might disappear from the fossil record?

Match each term to its best definition? sedimentary depositional enviornment

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides