Bryophytes also need a moist environment<span> to reproduce. Their flagellated sperm</span>must<span> swim through water to reach the egg. So mosses and liverworts are restricted to </span>moist<span> habitats.</span>
Your question isn’t clear though each body system holds its prime importance.
Https://undsci.berkeley.edu/lessons/heating_cooling.html (This should help you)
Answer : it takes six turns of the Calvin cycle to fix six carbon atoms from CO2. These six turns require energy input from 12 ATP molecules and 12 NADPH molecules in the reduction step and 6 ATP molecules in the regeneration step.