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34. In 1989 , the data below for the mice indicates that * On a newly formed island, successful
populations of grasses and a species of mouse appeared. Later, species of hawk flew in. The
hawks feed on mice and fish. The population levels of mice and hawks are represented in the
graph. growth rate is positive because births outnumber deaths growth rate is positive because
deaths outnumber births growth rate is negative because deaths outnumber births growth rate is
negative because births outnumber deaths 6. Harbour porpoises living off the northeast coast of
Scotland have been found dead washed upon shore, the victims of violent, high-energy impacts.
Zoologists have identified scratches on the dead porpoises that match the teeth of an unlikely
killer, the bottle-nosed dolphin, long assumed to be playful and gentle. These two cetaceans
(aquatic mammals), which share the same range and food supply, were thought to coexist
peacefully. What type of relationship do the bottle-nosed dolphin and the harbour porpoise
exhibit? Symbiotic Predator-prey Intraspecific competition Interspecific competition 17. The
carrying capacity of the stable nutritional environment expressed per litre approximates to The
Changes in a Daphnia Population Over Time The graph represents a population of Daphnia
(water fleas) cultured in a stable nutritional environment. -from Campbell 440 0.44 22 1100

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