Aworm is living inside a cow and stealing nutrients from the cow's body, causing the cow to become malnourished. what type of symbiotic relationship is this? a. mutualism b. parasitism c. commensalism d. biologism

B. Parasitism

Explanation:

Parasitism is a type of symbiotic relationship that exists between two different species. In this relationship, one organism (the parasite) lives in or on another organism (the host). The parasite gains benefits, while the host is harmed and do not gain any benefit. From the question, the type of symbiotic relationship that exists between the worm and the cow is parasitism. The worm which lives inside the cow and benefits from the interaction is the parasite, while the cow that is harmed (malnourished) is the host.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".