Some theories are developed from repeated testing of a single hypothesis. Cell theory, germ theory, and the theory of evolution all have developed from the testing of multiple related hypotheses. Which statement best explains why some theories develop this way? -A hypothesis tests many variables at once, which can lead to new hypotheses.
-Multiple related hypotheses will become theories before a single hypothesis does.
-Each scientist has used different wording when developing his or her hypothesis.
-Each experiment reveals a different piece of information that is needed to develop the theory.

hi,

the answer is third world countries, take for instance china, they restricted each family with only one child,

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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.