Suppose you are studying the nitrogen cycling in a pond ecosystem over the course of a month.While you are collecting data,a flock of 100 Canada geese lands and spends the night during a fall migration.What could you do to eliminate error in your study as a result of this event?

A)Find out how much nitrogen is consumed in plant material by a Canada goose over about a 12-hour period, multiply this number by 100, and add that amount to the total nitrogen in the ecosystem.
B)Find out how much nitrogen is eliminated by a Canada goose over about a 12-hour period, multiply this number by 100, and subtract that amount from the total nitrogen in the ecosystem.
C)Find out how much nitrogen is consumed and eliminated by a Canada goose over about a 12-hour period and multiply this number by 100; enter this +/- value into the nitrogen budget of the ecosystem.
D)Do nothing. The Canada geese visitation to the lake would have negligible impact on the nitrogen budget of the pond.
E)Put a net over the pond so that no more migrating flocks can land on the pond and alter the nitrogen balance of the pond.