(03.04 MC) An athlete is running vigorously trying to win a race. Which of the following correctly describes how her nervous system affects her cardiac
and respiratory systems? (2 points)
Оа
The sympathetic system is increasing heart rate and dilating the airways.
The sympathetic system is slowing heart rate and constricting the airways.
Oь
Ос
The parasympathetic system is increasing heart rate and dilating the airways.
Od
The parasympathetic system is slowing heart rate and constricting the airways.

i believe the answer is a or 1

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.