Here is a question about this article: Dogs have lived and worked with humans in so many roles that they have earned the unique nickname, "man's best friend", a phrase used in other languages as well. They have been bred for herding livestock, hunting (e.g. pointers and hounds), rodent control, guarding, helping fishermen with nets, detection dogs, and pulling loads, in addition to their roles as companions. In 1957, a husky-terrier mix named Laika became the first animal to orbit the Earth.
What is the answer to this question: What nickname have dogs earned for their relationship to humans?
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So... man's best friend

Here is a question about this article: Women were expected to obey the will of their father, then their husband, and then their adult son in old age. However, it is known from contemporary sources that there were many deviations to this rule, especially in regard to mothers over their sons, and empresses who ordered around and openly humiliated their fathers and brothers. Women were exempt from the annual corvee labor duties, but often engaged in a range of income-earning occupations aside from their domestic chores of cooking and cleaning.
What is the answer to this question: Which gender was exempt from performing the yearly corvee labor duties?
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So... Women

Here is a question about this article: Finally, an introduced species may unintentionally injure a species that depends on the species it replaces. In Belgium, Prunus spinosa from Eastern Europe leafs much sooner than its West European counterparts, disrupting the feeding habits of the Thecla betulae butterfly (which feeds on the leaves). Introducing new species often leaves endemic and other local species unable to compete with the exotic species and unable to survive. The exotic organisms may be predators, parasites, or may simply outcompete indigenous species for nutrients, water and light.
What is the answer to this question: What may unintentionally injure a species that depends on the species it replaces?
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So...
an introduced species