According to the passage, the author implies that foreign ecosystems have which potential effect on shorebirds? a. they can make a bird more vulnerable to predators. b. they can expose shorebirds to foreign toxins. c. they can diminish a bird’s ability to navigate. d. they can lead to a reduction in the bird’s weight. e. they can cause a bird to become separated from its flock.

D. They can lead to a reduction in the bird’s weight.

Explanation:

Judging from the passage

...A recent study found that, out of those shorebirds that were unable to migrate, some WEIGHED as much as 20% LESS than the average migrating bird of their species...

the answer is c) an oak tree

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation: