IB ESS SL 2.2.8 Second Law and Energy Loss Questions

i. second law of thermodynamics states that the entropy/disorder of a system increases over time / conversions/transformations in energy aren't 100\% efficient;
ii. available energy is lost to environment between trophic levels;
iii. energy is lost as heat from cell respiration;
iv. often only 10 % of available energy is passed on / 90 % lost between trophic levels / ecological efficiency is limited;
v. not all parts of the grass/zebra are consumed/absorbed;