Yield farming is a process in which token holders can stake, or lend, their tokens to pools in order to generate additional tokens as reward.
While single asset pools typically have the lowest risk for lower reward, liquidity pools that require tokens to be paired tend to have higher rewards, but also much higher risk.
Solarbeam has several pools in which you can earn more $SOLAR tokens by staking them in one of the pools.
Impermanent loss is a risk with all liquidity pairing. Please read the Frequently Asked Questions, for more information.