The mixture used to melt ice on Alberta roads usually contains calcium chloride and sodium chloride because
A. sodium chloride is too expensive
B. calcium chloride is inexpensive
C. calcium chloride cannot melt ice at temperatures below -10°C
D. sodium chloride alone will not melt ice if the temperature is too low

the answer is

Explanation:

D. sodium chloride alone will not melt ice if the temperature is too low

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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