Earthworm populations depend on both physical and chemical properties of the soil, such as temperature, moisture, pH, salts, aeration, and texture, as well as available food, and the ability of …

Earthworms help to fertilise the soil by bringing nutrients closer to the surface. Earthworms are widespread in Britain and Europe. They have been introduced to most parts of the world. They live in …

Nov 5, 2025 · Earthworm, any one of more than 1,800 species of terrestrial worms of the class Oligochaeta (phylum Annelida)—in particular, members of the genus Lumbricus. Seventeen native …

Oct 31, 2025 · Earthworms are a group of terrestrial annelids that constitute the suborder Lumbricina. They are characterized by an elongated, segmented body equipped with bristle-like hair for …

Learn all you wanted to know about common earthworms with pictures, videos, photos, facts, and news from National Geographic.

Earthworms are harmless, often beneficial residents of the soil. Earthworms breakdown dead and decaying organic matter into rich humus soil, thereby supporting plant growth. They also dig tiny …

May 27, 2024 · There are about 180 species of earthworm in the United States and Canada, and about 60 of them are invasive. You can check out more incredible facts about earthworms at this link.

Earthworms are more than just fish bait. They are the main contributors to enriching and improving soil for plants, animals and even humans. Earthworms create tunnels in the soil by burrowing, which …

Jul 31, 2025 · At first glance, the earthworm is an unassuming biological machine. Its body, moist and segmented, ripples through the soil without limbs, eyes, or lungs. But this simplicity hides a …

Earthworms are distinguished from other groups of Oligochaeta by their ecology. Earthworms are predominantly terrestrial, though they can be found in some freshwater environments such soils of …