Most of the frozen ice in a comet's vaporizes after the comet's many trips around the sun.
a.
coma
c.
heart
b.
tail
d.
nucleus

9. wind power creates pollution. water air soil noise

What causes temperature extremes in the desert

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.