The environment inside the vagina is not ideal for sperm because the vagina is
A) Basic
B) Cold
C) Neutral
D) Acidic
Answer: D) Acidic
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Which of the following drugs is NOT an alkaloid?
A. morphine B. caffeine C. LSD D. nicotine E. heroin
As succession proceeds, what occurs with animals living in the habitat?
A) Animals adapt to the new vegetation. B) Animals leave as their habitat disappears. C) New animal species evolve in response to vegetation. D) Animal species diversity continually decreases.
Many kinds of disease-causing bacteria are resistant to the standard antibiotics that we use to control them. This is because
A. when bacteria are exposed to antibiotics they mutate. B. there is genetic variety within the species and those that already have genes for resistance are the ones that reproduce. C. new species of bacteria have evolved that are resistant to antibiotics. D. when the size of the population of a species of bacterium is reduced, genetic variety decreases.
China's Guangdong province suffered backwash effects from Hong Kong's rise in the 1990s and 2000s
Indicate whether this statement is true or false.