Humans have used ____ to change the genetic characteristics of populations with similar genes.
Fill in the blank(s) with the appropriate word(s).
Ans: artificial selection
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Many ore deposits, including copper, lead, iron, and zinc, are associated with ____________________ metamorphism
Fill in the blank(s) with correct word
Official languages
A) are used by the government to conduct public and legislative business. B) ensure that everyone in the country speaks that language. C) require that all books and publications be produced in that language only. D) require all media to broadcast in that language. E) are spoken only in international and diplomatic negotiations.
What are dose-response curves, and what can they show?
What will be an ideal response?
Approximately 91 percent of the coal use in the United States today is used for ________
A) home heating B) transportation C) construction D) electricity