How can you best describe the continental shelf? a) the continental shelf is very deep. b) the continental shelf is the same width around the edges of the continents. c) the continental shelf is the part of the continent located above the water. d) the continental shelf is an extension of the continent under the ocean water. eliminate

D. The continental shelf is an extension of the continent under the ocean water.

Explanation:

A continental shelves are the part of a continent that  extends underwater.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.