Earthworms help form and add what to soil
Sediment organic material Converting waste. bacteria heat Chemical energy grass acidity
A B C D E F G H
Tulips perform best in a sandy, organically enriched soil.
Earthworms are important deposit feeders that help form and add organic material to soil
Earthworms help form and add what to soil (A) Sediment (B) organic material (C) Converting waste. (D) bacteria (E) heat (F) Chemical energy (G) grass (H) acidity