An acid is a substance is that produces hydrogen ion in an aqueous solution. Increasing hydrogen ion contents depict increase in acidic contents.
An Alkaline is a substance that produces hydroxide ion in an aqueous solution. Increasing hydroxide ion depicts increase in alkalinity.
Using a pH scales to measure the acidity or alkalinity of a substance has a range value of 0 to 14 . Decreasing pH value depict increasing acidity contents . 0 to 2 is very acidic 3 to 5 is moderately acidic and so on . 7 pH scale means the substance is neutral . From 7 upward depict increasing alkalinity.
Since the pH of rainfall change from 4.22 to 4.40 that means the acidic content decrease. The most acidic rainfall is 4.22.
The general trend for hormones after ovulation as an individual when it approaches menstruation is that hormone levels generally rise. This increase levels of estrogen and progesterone would cause a negative feedback to the hypothalamus and the pituitary, which would result in the decline of the FSH and LH. BTW: Not to be TMI but i started mine and there is nothing to be scared of.
