what is the primary way that combination birth control pills work to prevent pregnancy?

Combination birth control pills work to prevent pregnancy mainly because the pills constrain a woman’s time of ovulation – or they stop your ovaries from releasing ovules.  Combination birth pills are taken orally and they are composed of both steroid hormones and estrogen which can stop ovulation.

b) the inside picture would look at a very high temperature in a very low ph

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements