Predator and prey populations affect each other because if a predator of one prey kills that one animal than that animal dies and the prey decrease by one and when one predator dies from being killed or just naturally dying, then the predators decrease by one.
Acidic basic alkaline neutral
Answer is in the attachment.
B. <span>A population of wolves was introduced into Yellowstone National Park
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The cost should be:
2.50 + (19 x 0.40) = 2.50 + 7.60 = $10.10