which of the following about "life without gravity" explains why it is an expository essay
a. it is a short work of nonfiction that does not express the writers opinion
b. it is a short work of nonfiction that use examples to make its points
c. it is a short work of nonfiction that explains something in an amusing way
d. it is a short work of nonfiction that explains a topic

in which sentence about life without gravity is the word spines used correctly
a. in microgravity astronaut's grow taller because their spins all over the walls
b. astronauts have to be careful drinking in microgravity or juice spines all over the walls
c. when astronauts bodies adjust to microgravity they can have fun floating on spines
d. astronauts use spines to exercise in space so they don't get too weak for life back on earthplz me