Reading and writing fill in the blanks practice exercise. Below is text with blanks. Choose the correct word for each blank to complete the text.

Wolves and bears sound like unlikely allies. But the resurgence of (1) ………………. Park’s canine population has helped the bears. In the 1990s, people reintroduced wolves to Yellowstone Park, where they had been absent for most of the century. As their population grew, they began hunting elk, (2) …………………… their number. And with fewer elk snacking on berries, more fruit remained (3) ………………………. for bears. Comparisons of grizzly scat collected in the years before and after the wolves’ return showed an (4) ………………………… in the bears’ berry (5) …………………….., particularly during the months of July and August. The study is in the Journal of Animal Ecology. Fruit can make up fully half of a grizzly’s diet as it (6) …………………. for hibernation. But bears and berries aren’t the only ones to benefit from wolves. The canine comeback also boosted the growth of popular elk foods like aspen and willow trees. Which proves even a single species can have a strong (7) …………………..effect.

(1) Silicone, Chrome, Loan, Yellowstone
(2) duding, reducing, ruling, chewing
(3) available, educational, non-breakable, assailable
(4) feels, perceive, increase, infusive
(5) extraversion, slacken, dispersion, consumption
(6) frimaire, share, prepares, fair
(7) theorem, affliction, isolationism, ecosystem

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