Because the seeds need a lot of sun to keep them fed.

Because the seeds need a lot of sun to keep them fed.
Because the seeds need a lot of sun to keep them fed.

Because the seeds need a lot of sun to keep them fed.
因为种子需要许多阳光来孕育.

因为种子需要很多的阳光来喂他们
希望能够帮到楼主

因为种子需要吸收大量的阳光来维持自身的需求.(keep them fed 是被动语态,"让自己被喂饱",语意上说不通,应该是种子以阳光为生存所需的必要养料.所以要根据上下文的具体语境来理解和翻译!)
希望回答是正确的!