Farming, deforestation and construction all lead to the loss of terrestrial habitat. Conservation would be protecting terrestrial habitat.
Answer: If we kill all the organisms in one trophic level, then transfer of energy as well as matter to next higher level will stop. It will lead to over- population at one particular level causing amongst the individuals. This would seriously disturb the food chain and can cause the collapse of an ecosystem even.
The group there in is Tertiary Consumer.☺
B! we had to alter them to our preferred taste and nutrients
