4. Frequency of Your Period. The frequency of your menstrual cycle is a good indicator of how your health is doing. According to the Mayo Clinic, menstrual flow might occur every 21 to 35 days and last two to seven days, with menstrual cycles shortening and becoming more regular as you age.
Answer 1 Water, Wind, and Humans. Water usually causes rock and soil erosion. Wind is considered a tectonic type of erosion, as the wind can cause rock movement and soil tr â¦ ansfers. Humans also gradually erode away the earth by not very creative land management. (i.e. Farmers) Here is a link for more info: http://www.wisegeek.com/what-causes-erosion.htm _____ Answer 2 windwaterglacial
First there is rainfall and as it hits the Earth it can cause erosion, which is called splash erosion. When these water drops all get together and flow like a stream, this also causes erosion. Rivers are one of the biggest creators of erosion over time. As they run along their merry way, they break up lots of little particles along the bottom of the river and off they go downstream.