Trophic Levels

Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?

Which one occurs at same trophic level

Lions and wolves occupy the same trophic level

The amount of energy ______ as it flows from lower trophic level to hight trophic level.

Loss of energy from one trophic level to next higher trophic level is