Heeelp
look at the picture of the aquarium ecosystem. choose 1 for the abiotic factors and 2 for the biotic factors.{example(1: fish2: water)}

fish

water

rocks

salt

plants

sponge
1. abiotic
2. biotic

explanation:

the sequence of amino acids in a protein determines its function. the dna sequence of a gene determines the amino acid sequence of the resulting protein. thus, any changes in dna sequence can result in changes in protein function. this is called a mutation.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;