There are four ponds near Brian's house. He visits each one and writes notes about the plants and animals that he sees.
Location
Pond 1
Pond 2
Pond 3
Pond 4
Notes
two kinds of small fish, two kinds of plants, two turtles
surface covered by algae, few visible fish, two kinds of plants
two kinds of large fish, mostly one kind of plant
four kinds of fish with varying sizes, four kinds of plants, two turtles
Based on Brian's notes, which pond's ecosystem is likely to be the most sustainable?
OA. pond 1, because there are fewer insects affecting other organisms
OB. pond 3, because larger fish are better at surviving
OC. pond 2, because there are more algae performing photosynthesis
OD. pond 4, because it has the greatest biodiversity