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121
Do bacteria die of old age?
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97
Can HIV be transmitted via mosquitos?
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96
What's the evidence against SARS-CoV-2 being engineered by humans?
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85
How do scientists kill the bacteria they themselves made resistant?
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79
Why shouldn't dogs eat chocolate?
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58
How many mosquitoes would it take to “drain” enough blood to put a person into shock?
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50
Is there an advantage to antibacterial soap?
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37
Why isn't vomit corrosive?
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34
Why are vaccines for polio taken orally while vaccines for TB need to be injected?
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32
What is the name of this red plant?
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31
Why do we assume that the first humans were dark-skinned?
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30
Ripening bananas artificially: What is the biological theory behind?
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28
Why didn't the polar bear change its color from white to black during evolution to absorb heat?
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26
Did the Zika virus mutate?
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24
What is the most condensed form of (stored) energy used in biology?
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23
What is the speed of blood?
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23
Is there any relationship between heartbeat rate and life span of an animal?
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22
Why did humans lose their fur?
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21
Why is high fructose corn syrup unhealthy?
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21
What spider is this? Is it dangerous to humans?
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20
Why would a 2019-nCoV protein sequence in the NCBI database match a protein submitted in 2018?
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20
What limits our healing speed?
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19
Can butterflies still fly after their wings are touched?
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19
What is the evolutionary advantage of red-green color blindness?
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18
Can anyone identify this bird?
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17
Do identical twins have the same fingerprint?
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17
What is the explanation for the smaller number of tRNA than codons?
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17
Do electromagnetic waves outside the visible spectrum have any role in photosynthesis?
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16
How does isopropyl alcohol disinfect less in higher concentration?
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16
Why can white hairs get dark again?
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