Question

give reason trees grow on the old fold mountains but not on young fold mountains​

Answer 1

In the old fold mountains due to their age soil is found abundantly and water river systems are also found so these factors help in the growth of vegetation there

In young fold mountains due to their age is less and there is a constant friction between the tectonic plates soil is not settled there abundantly and water river systems are also not found ...

Hence trees grow on old fold mountains but not on young fold mountains

Answer 2

old fold mountain are type of high-land.

As you know that in high-land you can grow tree because of ingredients present in the soil of high-land but in

yong fold mountain are rock type of mountain .As you know that in the rock we can not grow tree or plants .