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The common ancestor of all animals is likely to have been a ________.
Q15: In the ecosystem shown, a toxin that
Q18: Which of these behaviors is NOT associated
Q29: The CORRECT sequence of events that occurs
Q32: Spiders are _.<br>A)herbivores<br>B)filter feeders<br>C)carnivores<br>D)omnivores
Q35: In most developed countries, overall population growth
Q39: All of the following are potential negative
Q41: Examine the relationships between the elephants in
Q42: The stomach's gastric juice consists of _.<br>A)digestive
Q48: Inheritance of certain genes increases the risk
Q57: Which characteristic is common to all chordates?<br>A)They