Which of the following are considered fossils?
A. Mineralized bones
B. Animals frozen in ice or preserved in amber
C. Footprints or other impressions preserved in stone
D. All of the above are considered fossils
Answer: D
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How does the ear allow humans to distinguish the volume of different sounds?
A) Louder sounds cause larger action potentials than do softer sounds. B) Louder sounds cause smaller action potentials than do softer sounds. C) Louder sounds induce a higher frequency of action potentials than do softer sounds. D) Louder sounds induce a lower frequency of action potentials than do softer sounds. E) Louder sounds cause larger action potentials than do softer sounds, and louder sounds induce a higher frequency of action potentials than do softer sounds.
Which of the following fungi form
mushrooms?
a. club fungi b. sac fungi c. zygote fungi d. yeast fungi e. more than one of these
How long ago did the hominin evolutionary
line diverge from that leading to the great apes? a. about 3 million years ago b. between 10 million and 5 million years ago c. during the Eocene epoch d. less than 2 million years ago e. about 1.5 million years ago
Crop plants modified to be resistant to insect damage produce Bt toxin from a (bacterial/fungal/synthetic) gene
What will be an ideal response?