Macy observes the lake near a park is covered in green slime. Over a few days she sees that the fish in the lake have started dying. What could
be a possible cause of this situation?
O
A.
The acid level of the lake has increased.
O
B.
An algal bloom has drained the lake of oxygen.
O
c.
Industrial chemicals have poisoned the lake.
O
D.
The sediment level of the lake has increased.