1.How do the activities of a keystone species affect the biodiversity of an ecosystem?
A.They increase biodiversity.
B.They decrease biodiversity.
C.They have no effect on biodiversity.
D.Biodiversity remains the same but the species change.
2.Which is a biotic factor in an earthworm's...
1.How do the activities of a keystone species affect the biodiversity of an ecosystem?
A.They increase biodiversity.
B.They decrease biodiversity.
C.They have no effect on biodiversity.
D.Biodiversity remains the same but the species change.
2.Which is a biotic factor in an earthworm's...
1.How do the activities of a keystone species affect the biodiversity of an ecosystem?
A.They increase biodiversity.
B.They decrease biodiversity.
C.They have no effect on biodiversity.
D.Biodiversity remains the same but the species change.
2.Which is a biotic factor in an earthworm's...
