。
The seeds of life have been sown.
Literal
Life [possessive-の] seed [topic-は] was-sown.
まく (蒔く) is the verb for 'to sow' (seeds), here in its passive past form まかれた. A short, literary, symbolic sentence — probably from a narrative or metaphorical context. The passive without an agent leaves the sowing as a completed event, backgrounding who did it.