How does a diaphragm prevent pregnancy?
a.
it releases spermicide into the uterus to keep sperm from fertilizing eggs.
b.
it produces hormones that keep a woman's ovaries from releasing eggs.
c.
it covers the penis to keep it from releasing sperm into the vagina.
d.
it blocks the cervix in order to keep sperm from entering the uterus.

Explain how unhealthful weight loss or weight gain can lead to further weight loss or weight gain.

The potential to eradicate preventable diseases in the future depends on other societal factors that influence coordination and deployment of global health resources. for example, 70 confirmed cases of circulating vaccinederived poliovirus type 2 (cvdpv2) were reported syria, which is embroiled in war. where else are similar societal challenges preventing the eradication of polio? uzbekistan. nigeria. pakistan. a and c. b and c.

Whihc type of medicine kills cancer cells in the body, but also kills healthy cells