Brown-headed cowbirds utilize fragmented forests effectively by _______. (A) feeding on the fruits of shrubs that tend to grow at the forest/open-field interface
(B) parasitizing the nests of forest birds and feeding on open-field insects (C) consuming the eggs of other species as well as insects and seeds in open fields (D) outcompeting other songbird species for access to nesting holes in old-growth trees

The two types of human parasites are endoparasites, which infect the body from the inside, and ectoparasites, which infect the skin on the outside.

Endoparasite cysts and eggs may be seen in feces, which helps identify the parasite in the human host and gives the parasitic species a way to leave the current host and infect additional hosts. Humans can acquire parasite illnesses in a variety of ways, but the likelihood can be decreased by adhering to simple hygiene and sanitation guidelines. The Pcr DNA antigen assay provides the most accurate diagnosis, but primary care doctors in the USA rarely order it because most labs only provide research services.

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