I feel as if it's D- None of the above. Because though America may support these things, other countries may not.
Answer:
They felt good about the policy
Explanation:
The correct answer is - biosphere conditions.
The ecosystems and the structure of the vegetation are parts of the wider term that is the biosphere. According to that, any changes that will appear in the functioning of the ecosystems, or if the structure of the vegetation is affected by something, it means that the biosphere is experiencing changes, thus it is becoming affected by this changes.
