3. recent years there has been an increase in the number of shark attacks along the florida beaches. tahir has been hired by the state to investigate this phenomenon. he wonders what change has prompted more shark attacks. he consults experts at marine science center in new smyrna beach, shark capital of the world. the data over the past 8 years show a steady increase and population and an increase in people who use the water for recreation. tahir believes that the steady increase in beach goers is related to the increase in shark attacks. what is the dependent variable in tahir's lab? (4 points) population of people increase in shark attacks the number of beachgoers number of years

b. the carbon cycle ensures living things have a source of hydrogen

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.