The atom found in the greatest amount in the human body, the earth's crust, and seawater is
A. hydrogen.
B. carbon.
C. nitrogen.
D. oxygen.
E. phosphorus.
Answer: D. oxygen.
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How did the experimental group differ from the control group in the 2005 peacock butterfly experiment?
a. They were different species. b. Their native habitat of the forest differed. c. They were spotless and soundless. d. They tasted worse. e. They preferred different flowers species.
At least 150 zoonoses exist worldwide, including which of the following?
a. anthrax b. plague c. polio d. RSV e. rabies f. toxoplasmosis
The cuticle of a plant is primarily for ____.
A. absorption of carbon dioxide B. water conduction C. water conservation D. protection from strong sunlight E. mechanical support
Which of the following processes occurs in eukaryotes but not prokaryotes?
A) DNA replication B) capping C) transcription D) translation E) gene regulation