CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 36, Problem 13TYK

The mountain gorilla, spotted owl, giant panda, snow leopard, and grizzly bear are all endangered by human encroachment on their environments. Another thing these animals have in common is their K-selected life history traits. Why might they be more easily endangered than animals with r-selected life history traits? What general type of survivorship curve would you expect these species to exhibit? Explain your answer.

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Very few species on Earth are completely r-selected or K-selected. Many species in their natural habitats demonstrate a life strategy that ranges along a continuum between r- and K-selected strategies. Use this information to answer the 3 sub-parts. a) Sea otters are marine mammals that live in northern Pacific coasts. Typical female sea otters reach sexual maturity around 3 or 4 years of age, and they reproduce once a year, producing a single pup.Only female sea otters are tasked with raising the offspring. Mothers constantly take care of their pups until they are 8 months old, but only 25% of the pups survive past the first year. Sea otter fur was highly sought after between the 18th century and the early 20th century. Through conservation efforts, the number of sea otters increased. The current world population is estimated to be between 1 000 and 2 000 individuals, and they are considered to be endangered. Their main food source is sea urchins, molluscs, and crustaceans. Sea…
Give your response to the following statement: “Eventually, all species become extinct. So it does not reallymatter that the world’s remaining tiger species or atropical forest plant are endangered mostly because ofhuman activities.” Be honest about your reaction, andgive arguments to support your position.
Which of the following best predicts the consequences of introducing brown rats ( invasive species) to an island where they did not previously exist? Choose 1 answer: Choose 1 answer: (Choice A) A The rat population size will likely remain small, and as a result the rats will not be able to outcompete other organisms for resources. (Choice B) B Without its typical food sources, the rat population will not be able to become established, and the island ecosystem will remain stable. (Choice C) The rat population will grow rapidly, disrupting the island's community structure by feeding on native plants and animals. (Choice D) D Without any natural predators, the rat population will become established and help increase the species diversity of the island answer explain
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