A) Read the text in this section again and construct a food chain from information. b) Describe the path of energy through the food chain. Remember that energy is used by living things for life processes such as movement and use this knowledge in your answer.
Figure 4.3 A killer whale hunting a seal

The higher you go up the less oxygen there is 

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.