A spider producing a web to ensnare prey, a beaver constructing a dam to engineer habitat, a bird fashioning a nest to protect their eggs, a crow using a stick as a tool to harvest insects, are all behavioral adaptations by which the motivations and neural circuitry underpinning these behaviors are genetically based, yet operational only through interactions with the external environment, as a mechanism to by which facilitate individual survival and reproduction. The web, the dam, the nest, and the tool are all examples of: Select one: O a. evolutionary trade-offs O b. signal displays O c. kin selection O d. extended phenotypes

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Immune Disorders

The collaboration between the cells and proteins that work together as a defense system against infection comprises the immune system.Each of them performs a variety of tasks to recognize and/or react against a foreign body.