Determine whether each change represents oxidation or reduction. Oxidation Reduction C 2 H 6 O C2H6O to C 2 H 4 O 2 C2H4O2 Fe 3 + Fe3+ to Fe 2 + Fe2+ Cu Cu to Cu 2 + Cu2+ NO − 3 NO3− to NO − 2 NO2− C 6 H 12 O 6 C6H12O6 to CO 2 CO2 ubiquinone (a ketone) to ubiquinol (an alcohol) 2 Ag + 2Ag+ to 2 Ag 2Ag CH 3 CH 2 OH CH3CH2OH to CH 3 CH 3 CH3CH3

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

24 points and brainliest to anyone who can answer under 10 minutes with best ! the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system