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- In Glacier Sea the orca population was INCREASING in size. If the orca population increased what would happen to the zooplankton population?What was responsible, in part, for the Migratory Bird Treaty Act, which was passed in 1918? changes in climate increased interest in hunting lack of breeding grounds fashion trends that required bird feathersName at least three reasons that could explain why the giant panda’s habitat has been reduced to small and isolated areas ofChina when it once spanned nearly the entire country and into neighboring countries.
- Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the following would likely occur? a. The carrying capacity of seals would decrease, as would the seal population. b. The carrying capacity of seals would decrease, but the seal population would remain the same. c. The number of seal deaths would increase, but the number of births would also increase, so the population size would remain the same. d. The carrying capacity of seals would remain the same, but the population of seals would decrease.There are two critically endangered amphibian species found in the Western Cape. Known as M. capensis (Micro frog) and H. rosei (Table mountain ghost frog). What can be done to conserve these species?Scientists estimate that whaling activity in the nineteenth and early twentieth centuries reduced the number of adult female southern right whales to as few as 60 by 1920. This is an example of ______.
- Based on the food web, would you consider wooly mammoth a keystone species? Why or why not?2 Wolves are introduced into the park → The number of elk calves born to every 100 female elk Stayed the same Decreased Increased → The overall elk population Stayed the same Decreased Increased → Competition for plants elk eat Stayed the same Decreased Increased → Availability of resources for bison Stayed the same Decreased Increased → Bison population Keystone predators increase the intensity of competition prey on species at random always prey on the poorest competitors prevent competitive exclusion by preying on competitors are observed only in rocky intertidal zones
- Discuss reasons why gray whales leave their cold-water feeding grounds during the winter season.Two related species of salamanders were found living on opposite sides of a mountain. One species lives in along a shady forest stream on the leaf covered-ground and is brown with dark green spots. The other species live along the bright, sandy banks of a larger river is light tan in color. What is most likely cause of the difference between these two species of salamander? Group of answer choices Competition Predation Mating seasons Different habitatsWhich of the following is not one of the recognized groupings of killer (orca) whales on the west coast of Canada? transients all of the options are correct open-ocean migrants residents According to the federal agency that determines the conservation status of Canadian species, which of the following categories describes when a species may become threatened or endangered because of a combination of biological characteristics and identified threats? Threatened extirpated special concern Endangered data deficient