Answer:
Ophiolites
Explanation:
Ophiolites are regarded as a part of the Earth's oceanic crust and the underlying upper mantle which has moved up above the sea level thereby exposing it to the surface. They usually form a part of the continental crustal rocks.
Ophiolites are important and greatly influence Geologists having an idea about the composition of ocean crust.
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.
The mongooses are very effective in controlling the snake populations, as is the case in Hawaii, but the problem is that they represent an invasive species. As an invasive species, they disrupt the whole ecosystem on the islands, the local fauna can not cope with them because they do not have the defense mechanisms needed, nor can reproduce as fast, and also head to head are out competed, so the local fauna is becoming endangered and in time will probably get exterminated by the invasive mongooses.