Helicobacter pylori is responsible for ________.
A. pneumonia
B. dysentery
C. cholera
D. peptic ulcer disease
Answer: D
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What do bryophytes lack that make them less likely to have formed fossils?
a. Chlorophyll b. Lignin c. Deep roots d. Special cells that conduct fluids
The primary muscle(s) involved in human breathing is/are called the
a. external intercostals. b. internal intercostals. c. diaphragm. d. abdominal wall muscles. e. lung muscles.
When you eat mushrooms on your pizza, you are technically eating the
A) mycelium. B) roots. C) fungal leaves. D) seeds. E) chloroplasts.
The archeological record indicates when people began using various grains and legumes and when these food plants were domesticated
Looking at the figure below, estimate how long humans have been selectively breeding grains. (Note that the gaps in the figure represent periods when no evidence of the crop indicated was found.) What will be an ideal response?