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.
B, provide systematic irrigation.
Hello
1 and b
2 and c
3 and a
Have a nice day
Answer:c
Explanation: when you don’t know the answer is always C