Niche is a specific natural space occupied by a species of an organism in an ecosystem where the organism successfully interacts with biotic and abiotic factors making it to thrive and successfully make use of the resources in the space it occupies.
The soil, as an ecological niche for the earthworm, has environmental conditions that favors the successful existence of the earthworm which plays an important functional role within the ecosystem.
Lactose intolerance is when your body can't break down or digest lactose. Lactose is a sugar found in milk and milk products. Lactose intolerance happens when your small intestine does not make enough of a digestive enzyme called lactase. Lactase breaks down the lactose in food so your body can absorb it.
