Genetic variation occurs through genetic recombination. which method of genetic recombination is illustrated in the diagram? independent assortment fertilization crossing over sexual reproduction

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture