The final link of a food chain is the decomposer, who eats dead and decaying material. why are these organisms essential to the food chain.

answer; i do believe that the correct answer is; ///mendelian genes are at specific loci on the chromosome and, in turn, segregate during meiosis;

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

d. changes in climate and historical records

hope this