The Earth has ________ for the past 2 million years
A) gradually cooled
B) cycled between hot and cold
C) stayed the same temperature
D) slowly frozen then quickly thawed
E) gradually warmed
Answer: B
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Describe the origin and evolution of the European Union (EU) in terms of its goals
What will be an ideal response?
The hydronium ion concentration in an aqueous solution where the pH = 5 equals
A. 1 × 10-5 M. B. 1 × 10-3 M. C. 1 × 10-7 M. D. 1 × 10-9 M.
If someone says, "Only organisms that breathe can perform cellular respiration," are they correct? Explain
What will be an ideal response?