The density of pure ice is
A) the same as water.
B) less than that of water.
C) greater than that of water.
D) highly variable.
E) greater in winter than in summer.
Question 2
The small pores on the surfaces of plant leaves through which gases move into and out of are known as
A) stoma. B) chlorophyll. C) sporangia. D) chloroplasts. E) guard cells.