What is the greatest threat to birds today?
A) pollution
B) poaching
C) habitat loss
D) the illegal pet trade
Correct Answer:
Verified
Q40: Where did humans first appear?
A)South America
B)Africa
C)Asia
D)Europe
Q41: The process of biological evolution often allows
Q44: The figure below shows a simple worm.Bilateral
Q45: Annelids are most closely related to _.
A)chordates
B)arthropods
C)molluscs
D)echinoderms
Q46: What type of symmetry does this organism
Q47: The first hominid to spread beyond Africa
Q49: Which of the following is one way
Q51: Which of these human characteristics is hypothesized
Q52: Flatworms are similar to cnidarians in that
Q53: Approximately what percent of bird species are
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