#Question id: 10723
#Section 1: Ecology
What does the graph tell you about the effect of a keystone species?
#Question id: 11511
#Section 2: Evolution
A metapopulation is
#Question id: 4636
#Section 2: Evolution
Given a population that contains genetic variation, what is the correct sequence of the following events, under the influence of natural selection?
1. Well-adapted individuals leave more offspring than do poorly adapted individuals.
2. A change occurs in the environment.
3. Genetic frequencies within the population change.
4. Poorly adapted individuals have decreased survivorship.
#Question id: 10698
#Section 2: Evolution
Parasite and predator have long been associated with their respective host and prey respectively. Which of the following is correct statement?
A. Body size of parasite is always smaller than host but predator usually larger than prey
b- Predator immediately kill their prey but parasite may or may not be kill their host
c- Intrinsic rate of parasite is faster than host but intrinsic rate of predator is slower than prey
d- Body association time between parasite and host is more than time association between predator and prey
#Question id: 11986
#Section 1: Ecology