Variety in species exists because

a. mitosis
b. asexual reproduction
c. fission
d. sexual reproduction

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

There are only about 250,000 known fossil species. true or false