What is the function of white blood cells?
a. transporting hormones
b. fighting infections
c. gas exchange
d. causing illness

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Someone me with this: a mineral' is determined by its actomic structure.

Which of the following is a good strategy when it comes to desserts