Are you attending laurel springs school? if so I GO THERE !!!!! I need the same help :) I know one of them was pollution
Answer: The population size is recorded for each species present in the construction area before and after the building is completed
This method of collecting data will provide the most accurate information about how an ecosystem is being affected by human development because it studies a lot of different species both before and after the construction.
The answer is in your heart and soul