Multiple Choice
The keystone hypothesis supposes that community services
A) Are unrelated to species richness
B) Are related to species richness, but not in a predictable way
C) Plummet as soon as an important member of the community is removed
D) Decrease in a step-wise fashion as species richness decreases
Correct Answer:

Verified
Correct Answer:
Verified
Q3: Resilience refers to how tolerant a community
Q4: Lakes are strongly resilient but weakly resistant
Q5: Elton suggested that species-poor island communities are
Q6: According to ecomonist Robert Constanza and colleagues,
Q7: Experiments show increased natural enemy species richness
Q9: In this model, some species play a
Q10: Tilman and colleagues showed that the more
Q11: A plant with a high dispersal ability,
Q12: _ proposed a linear relationship between species
Q13: A corn farmer in the Midwest is