What is one difference between mitosis and meiosis? * 1.chromatids do not separate at the centromere in anaphase 1
2.crossing over occurs only in the prophase of mitosis
3.centromeres do not exist in anaphase 1
4.the chromosomes line up at the equator of the cell

it has one origin of replication, but it proceeds in two directions - d)

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

paper covers rock.

explanation:

rock only smashes scissors.