Question

why do weeds and wildflowers go away during secondary succession? animals consume all of the smaller plants the nutrients in the soil become depleted trees grow and shade out these plants

Explanation:

During secondary succession, as the ecosystem develops, trees grow taller. Their canopies block sunlight from reaching weeds and wild - flowers, which need sunlight for photosynthesis. This shading out causes these smaller plants to decline.

Answer:

trees grow and shade out these plants