Biology, 10.03.2020 17:02 nolimitsteve3210
A NASA scientist receives satellite data indicating that a newly discovered planet contains no oxygen gas in its atmosphere. From this information she concludes that complex multicellular organisms are UNLIKELY to exist on that planet. This is because.
a. unicellular organisms consume multicellular organisms when oxygen levels are low
b. other electron acceptors (like iron) are unlikely to be widely available and abundant
c. endosymbiosis requires high oxygen concentrations for evolution to proceed
d. complex multicellular life cannot exist once photosynthesis has evolved
Answers: 1
Biology, 22.06.2019 11:30, brebre63
What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.
Answers: 1
A NASA scientist receives satellite data indicating that a newly discovered planet contains no oxyge...
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