Asituation where friction is desirable.

Someone me with this: a mineral' is determined by its actomic structure.

What are 3 reasons that natural selection occurs

Follow the directions for self-quiz question 8, draw it, by labeling the appropriate structures with these terms, drawing lines or brackets as needed: chromosome (label as replicated or unreplicated), centromere, kinetochore, sister chromatids, nonsister chromatids, homologous pair, homologs, chiasma, sister chromatid, cohesion