The Bamboozler, a notorious panda thief, is on the run. To evade capture, he travels 30 km east, then 25 km north, and finally 15 km west. What is the magnitude of the
Bamboozler's net displacement?
52 km
29 km
57 km
70 km

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

The sun's gravitational pull is weaker on the planets that are closer to it, i think.

//(b) both involve the use of levers;