The Institutional changes between the 1960s and 1980s shifted the public policy from emphasizing public interest to upholding and satisfying the regulations. Among the greatly affected was the educational system. The structures of the different learning institutions were changed to accommodate dynamic market models and work around the expected outcomes of learning.

1) x=9, because we can use the Pythagorean theorem, x^2 + 144 = 225, x^2 = 81
2)
, because 6^2 +6^2 = 72, 
3)
, because 
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The answer is parallelogram because it’s perpendicular
Here is your answer:
Your answer is C decrease!
Reason: That's because when their are two predators who eat the same animal their animal species will decrease because of new predators that will eat them!
Your answer is C.