What was the likely reason humans lost their hair (in comparison to our closet ape relatives)?

A. Hair can get matted and dirty which poses increased risk of exposure to disease, and thus that attribute was selected against.
B. Male parental care increases in conjunction with a loss in body hair due to a dip in testosterone. Females thus likely selected for men with less body hair resulting in diminished body hair for humans over thousands of years.
C. As humans became bipedal, they lost their body hair in order to better thermoregulate


Answer: C. As humans became bipedal, they lost their body hair in order to better thermoregulate

Biology & Microbiology

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In streams flowing through dense forest, ____; therefore nutrients from organic detritus is particularly important

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What is an important effect of coastal upwelling? a. It creates a stable water column

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Joint (synovial) cavity

What will be an ideal response?

Biology & Microbiology