A drafter, draftsperson, or draughtsman is a person who makes a drawing (technical or expressive). A professional drafter who makes technical drawings is sometimes called a drafting technician. Professional drafting is a desirable and necessary function in the design and manufacture of complex mechanical components and machines.
Introduction. Behavior is determined by a combination of inherited traits, experience, and the environment. Some behavior, called innate, comes from your genes, but other behavior is learned, either from interacting with the world or by being taught. Let's read about some pet behavior and try to figure out if it's learned or innate.
Cells of the innate system respond to pathogens in a very general, generic way. Their response does not change, regardless of the type of pathogen involved. Another key feature of the innate immune response is that it has no memory, and it cannot trigger the development of memory. The innate response is, in evolutionary terms, a much older defense system than the adaptive response â plants, fungi, insects, and more primitive multicellular organisms have innate immune defense systems.