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What has created at least half of the oxygen in Earth's atmosphere?
Q15: Drug resistance to anti-HIV drugs is a
Q19: Which component of bone tissue forms the
Q20: Asexual reproduction<br>A) requires the genetic contributions of
Q25: Which type of muscle in humans is
Q40: Modern farmers use irrigation to deliver which
Q44: Which muscle component is smallest?<br>A) myofibril<br>B) myosin
Q46: Fossils of ancient organisms are found in
Q47: What is a nerve?<br>A) a bundle of
Q58: Although the carrying capacity of a population
Q64: What is the evolutionary origin of light