Phanpy can't learn earthquake. Only donphan can. I'd say donphan can learn it between lv. 50-60.
Phanpy does not learn Earthquake by leveling up, however its evolution Donphan can learn the move at level 46.
Yes, there are decent Pokemon that can't learn earthquake. Each Pokemon has its own strengths and weaknesses.
It doesn't learn Earthquake through level up, but it can learn it through the use of the Earthquake TM.
Pokemon that are ground type.
You have to use the TM10 to get earthquake. Venasuar doesn't learn it on its own
Yes
The Pokemon Aggron is the final evolution of the Pokemon Lairon, which evolves at level 42. It is not able to learn the move Earthquake through leveling, but it can be taught Earthquake using TM26 at any time.
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It can learn it via the TM but not by level.
I dont think it can learn it.
Charmander, Cyndiqual can learn smokescreen
In Pokemon diamond and pearl golem learns earthquake at level 33