Which of the following objects is a burning ball of mostly hydrogen atoms?
a. an asteroid.
b. a galaxy
c. a star
d. a moon

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

answer; blank(1); cervical; blank(2); lumbosacral;

answertheory;