An exposure pathway-describes a unique mechanism by which an. individual or population is exposed to chemical or physical agents at or originating from. a site. Each exposure pathway includes a source or release from a source, an exposure. point, and an exposure route.
Terminology: Young cattle are called calves. A young male is called a bull calf; a young female before she has calved the second time is called a heifer (pronounced heffer). A young female that has had only one calf is sometimes called a first-calf heifer..
That is all a steer is. A cow is a cow and it does not point to any classification within the species. So a steer is a cow just a type. An non-castrated male cow is called a bull.hat is all a steer is. A cow is a cow and it does not point to any classification within the species. So a steer is a cow just a type. An non-castrated male cow is called a bull.