Which method of birth control works by delivering a daily dose of estrogen and/or progesterone in order to prevent ovulation and changes in the lining of the uterus to prepare for implantation?

What is the name of the tool scientists use to identify a species? species key dichotomous key species marker dichotomous marker

Patrick's parents are worried that he may face discrimination in his new neighborhood. which factor is most likely to cause worry to his parents? a. patrick has unusual pets at home. b. patrick belongs to a different culture than that of the majority group. c. both patrick's parents hold jobs outside the home. d. patrick likes a particular sport.

What happens in the process of photosynthesis