Which of the following has the greatest impact on an ecosystem migratory animals predation human inference

human interference

Explanation:

Think of the hybrid lady bug..introduced to control insects on crops.

now they are reproducing rapidly, eating natural ladybugs, and other helpful insects..I haven't seen a red ladybug for years. in nw Illinois..

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !