Which defines a codon? * a protein that begins transcription by breaking apart H bonds
three nucleotide bases on mRNA that specify one amino acid
O the strong bond between two complementary nitrogen bases
O a free-floating base that attaches to an open DNA strand

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.

i think the answer is a.keratin is the pigment responsible for skin color.

the  different  of  these  two  are  that  they  differently  handle  their  team.

an  expressive  leader  focuses  on  the  task  at  hand  and  make  sures  that  their  goal  is  achieved.  they  accurately  finish  the  task.  an  instrumental  leader  on  the  other  hand  works  on  the  unity  of  the  group,  they  care  more  about  their  employees.  all  the  while  creating  a  good  environment.

artificial selection

explanation:

this occur when man select base on their intelligent