What are four ways that earths surface has change?

Hello there!

WIND) Wind carries around tiny sand particles which, overtime piles up in one area forming land structures.

EROSION)Water, and ice removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location.

WEATHERING)Destroyes ceartain landforms re-shaping them into diffrent shapes, and sizes.

yes? sounds right, but you didn’t ask a question.

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.