Multiple Choice
What is the greatest threat to birds today?
A) pollution
B) poaching
C) habitat loss
D) the illegal pet trade
Correct Answer:
Verified
Correct Answer:
Verified
Q3: Where did humans first appear?<br>A)South America<br>B)Africa<br>C)Asia<br>D)Europe
Q5: Rays are a type of _.<br>A)tunicate<br>B)cartilaginous fish<br>C)jawless
Q21: Which of these human characteristics is hypothesized
Q23: Flatworms are similar to cnidarians in that
Q24: Nearly all _ are aquatic.<br>A)crustaceans<br>B)arachnids<br>C)flatworms<br>D)roundworms
Q25: Insects,such as the grasshopper shown below,have _.
Q27: According to the figure,which organism group demonstrates
Q28: Annelids are most closely related to _.<br>A)chordates<br>B)arthropods<br>C)molluscs<br>D)echinoderms
Q31: A characteristic of arthropods that has allowed
Q52: What does the term "tetrapod" mean?<br>A)egg-laying<br>B)living on