Water shortage, domestic waste, coastal erosion
Explanation:
Germany's condition of reduction of population is because of pandemic effect on global recolation.
Positive:There would not be much pandemics, diseases,& so on.
Negative: There would be an effect on economy, there'll be few or less workers,so on.(This would be a larger effect than the positives of course)
One reason of undergrowth is of jobless rate & bare utilisation anticipation.

I think this is the answer.
Answer:
it's very blurr, your question can't be seen well
Plants and animals. I hope that helped!
Answer:
A. controlling worldwide oil prices
Explanation:
OPEC stands for The Organization of the Petroleum Exporting Countries. It is a huge entity that controls the prices of oil internationally. It has heavy influence over politics as for example, if OPEC supported Saudi Arabia and Iran was invading Saudi Arabia, it would raise oil prices heavily for Iran and its allies.