Density involves the amount of a material in a certain volume. when a material changes phases, it changes in density in a predictable way as the amount of material stays the same but the molecules get farther apart or closer together. water has solid and liquid states that do not follow these predictions of density in the phases of matter. what does that mean about the densities of the phases of water?

What is the most important inorganic material for livings things? ! due tomorrow!

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

Anonnative species is best described as a species that a. does not normally live in an area b. has no permanent home c. is a poor predator d. increase biodiversity