Nick and Bart climbed a 2000-m mountain. Nick took a 3-km trail, and Bart took a 6-km trail. If Nick and Bart weigh the same, their packs weigh the same, and they walk the same speed, why did Nick have a harder climb?

answer; i believe that the correct answer is (lung);

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation:

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

i was thinking 4.0 v hope this