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Biology 20 Online
OpenStudy (anonymous):

List at least two forms of evidence to support the hypothesis that killer whales are preying upon sea otters

jagr2713 (jagr2713):

well you can see that there are fewer sea otters where there are large numbers of killer whales.

jagr2713 (jagr2713):

what do you think can be one more type of evidence. think about photographs

OpenStudy (anonymous):

that the population is going down

jagr2713 (jagr2713):

what else can be evidence?

jagr2713 (jagr2713):

you there @taylor12344

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