Question

QUESTION 11

Correlated fluctuations in the abundance of lynx and hare in Canada have been documented by records at fur trading posts. Experimental studies and population models agree that the amplitude of the oscillations in the abundance of hare are smallest when…

Group of answer choices

a.)interspecific competition between lynx and hare is low due to niche differentiation.

b.)competition among hares for resources is low because food is plentiful.

c.)predation by lynx and intraspecific competition for food both limit hare population size.

d.)predators are absent.

e.)lynx exert stabilizing selection on hare body size.

QUESTION 12

Increasing which of the following factors will MOST likely increase local species richness across the broadest range of conditions:

Group of answer choices

a.)environmental stress

b.)the number of different kinds of resources or habitats present

c.)nutrient supply

d.)interspecific competition

e.)the frequency of disturbance

Answer 1

11) Experimental studies and population models agree that the amplitude of the oscillations in the abundance of the hare is smallest when:

c.) Predation by lynx and intraspecific competition for food both limit hare population size.

Reason: When the population of one species is decreasing this could arise due to reasons like other species is acting as a predator on the first species and decreasing its number, there is food limitation that brings intraspecific competition to exist between that species which means individuals of that species are fighting and killing each other thus decreasing their own number.

12) Increasing which of the following factors will MOST likely increase local species richness across the broadest range of conditions:

b.) The number of different kinds of resources or habitats present

Reason: Increasing a different kind of resources will support the lynx and hare population number and decrease the competition for the same resource, and also providing more habitat facilitate the same as this will keep them away from each other that reduces the inter-species competition.