20 a squirrel carry out a plant’s reproduction. arrange the steps in the correct order, starting with successful pollination. tiles the squirrel collects the seeds. the plant produces seeds. the squirrel buries the seeds for the winter. pollen fertilizes the female part of the plant. the squirrel doesn’t come back for the seeds. a new plant grows.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]