ANSWERS

1) An ear tag with a microchip identifying each animal, to keep track of herd composition.
2) a
3) prairie dogs and their burrows
4) c
5) all of the species and interactions among species that make up an ecosystem
6) b
7) To wait for favorable winds before crossing the Gulf of Suez.
8) Loss of feeding ground in Europe due to increased farming. Disruption of migration patterns due to development in Sharm el Sheik.

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