Which type of rock is non-foliated metamorphic rock?
o
gneiss
limestone
marble
o
slate

Marble is one type of "non-foliated metamorphic rock".

Option (c);

EXPLANATION:

marble

Explanation: Foliated metamorphic rocks such as gneiss, phyllite, schist, and slate have a layered or banded appearance that is produced by exposure to heat and directed pressure. Non-foliated metamorphic rocks such as hornfels, marble, quartzite, and novaculite do not have a layered or banded appearance.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

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.