on all Pokemon games you are supposed to fight with them to level them up so that they can evolve. unless you have a rare candy its levels them up by 1. so the answer is fight with it
It is suppose to evolve at the Level of 20,but if you want it to evolve later it can evolve anything after it is at Level 20.
It will evolve by level. Teddiursa will evolve into a Ursaring at level 30.
They evolve on level 40
They evolve at level 36
It will evolve at level 36.
it evolve on level on 64
Kricketune does not evolve, but a Kricketot will evolve into Kricketune at level 13.
To evolve a Sandshrew level it up to Level 22 and it will evolve into Sandslash.
Pikachu do not evolve by level. They evolve when a thunderstone is used on them.
if you dont let it evolve at the required level of level 20. itll try to evolve at every level following.
Level 40.It will evolve at level 40.