#Question id: 10631
#Section 1: Ecology
To estimate the number of foxes m an area, a researcher conducted a mark-recapture survey. In the fast survey, he caught and marked 90 foxes. In his second survey a week later, he caught 120 foxes of which 40 were marked (recaptures). If you are told that the actual number of foxes in this area is 400, which of the following is a plausible explanation for the anomaly in the researcher's data?
#Question id: 4946
#Section 2: Evolution
Although absolute distinctions between the ʺmost evolvedʺ protobiont and the first living cell are unclear, biologists generally agree that one major difference is that the typical protobiont could not
#Question id: 11359
#Section 1: Ecology
A predator exhibiting switching behaviour would be expected to underrepresent the prey in its diet (compared to the abundance of prey in the environment) when the prey is at __________ density.
#Question id: 10824
#Section 2: Evolution
Interspecific competition has been demonstrated experimentally in
#Question id: 11774
#Section 1: Ecology
If environmental variation is common, individuals with certain life history strategies have higher fitness. An example is: __________.