mature
Either a hills or a mature (well eroded, old) mountain range.
These are either VERY old mountains formed by the crust compressing or mountains formed by the crust slowly pulling apart over time.
Climate conditions
it is a loose object
gentle slopes
very broad volcanoes with gentle slopes formed by basalt lava flow are what shield volcano slopes have
stalkers
canthentian volcano
The sun
No. Granites is very resistant to weathering. it will often form very steep slopes and sheer cliffs.
mountain system
A shield volcano has very broad, gentle slopes.