Based on the information in this passage, which of the following is a reasonable conclusion?

A) Scientists will never change the classification system again.

B) Scientists know everything there is to know about all organisms.

C) Scientists have never changed the classification system.

D) New scientific discoveries could change the current classification system.

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

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.

the correct answer is d