Which of the following is not an anatomical change that would be associated with a transition from four to two legs?
A. S-shaped spine
B. repositioned foramen magnum
C. narrower human foot
D. wider stance
E. None of the answer options are correct.
D
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A new species of mammal is discovered deep in the Antarctic. This mammal contains an organ that does not seem to
be homologous to any other known organ. Upon examination, it appears that this organ is responsible for secreting hormones necessary for regulating subcutaneous fat levels to regulate body temperature. To which system does this new organ most likely belong?
a. digestive system b. integumentary system c. immune system d. endocrine system e. nervous system
In the absence of ATP, a contracted muscle can't relax
Indicate whether the statement is true or false
Alders are trees with symbiotic nitrogen fixing bacteria in their roots. This enables alders to be a key part of ________ in recently glaciated areas in Alaska.
A. secondary succession B. primary succession C. inhibition D. emigration E. species extinction
Fungal cell walls are composed of lignin
Indicate whether the statement is true or false