Question

Im
of
Expand the headlines and fill in the blanks using the passive verb forms.
1. Animal Leaders Improve with Age

That older elephants are best at keeping a herd safe_(prove)
in Amboseli National Park, Kenya. This is true not only in elephants, but also in most
other large-brained, long-lived social species, such as whales and primates, where
knowledge_(accumulate) over a period of time.
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Answer 1

Answer:

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