Which method of birth control involves hormones?
a) birth control patch
b) female condom
c) vasectomy

Why is it often difficult to get funding for local parks? a. state governments do not like to grant permits for local parks. b. federal regulations prohibit most fund raising. c. there is often a small tax base. d. federal funding cuts have all but stopped local construction of parks.

In this model, what do p, s, and a bases represent?

True or false a fertilized cell divides many times to form an embryo