Many crustaceans (for example, lobsters, shrimp, and crayfish) use their tails to swim, but crabs have reduced tails that curl under their shells and are not used in swimming. This is an example of ________.

#Question id: 11512

#Section 2: Evolution

The mortality rate of organisms following a type iii survivorship curve is

#Question id: 4708

#Section 2: Evolution

The following questions refer to the figure below, which shows an outcrop of sedimentary rock whose strata are labeled A-D. If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?

#Question id: 10857

#Section 1: Ecology

Cowbirds never make nests, never incubate their eggs, and never care for their young. Instead they lay their eggs in the nests of host species, which either reject the egg or care for it and the young that hatches as their own. The cowbird is an example of a(n)

#Question id: 11923

#Section 1: Ecology

You are interested in studying how organisms react to a gradient of a variety of abiotic conditions and how they coexist in this gradient. The best location in which to conduct such a study is

#Question id: 11856

#General Aptitude

Find the least number which when divided by 5 , 7 , 11 leaves reminders 1 , 2 , 4 respectively.