Materials, products and services - the Green Guide Online provides details of the life cycle environmental impacts of construction materials and components, and the Green Book is a free online database of products and services.
Spermicides are used globally for birth control, with or without condoms. As the only means of birth control, spermicides are rarely effective. However, in conjunction with condoms, spermicides are somewhat effective in birth control.
studies show that the sperm that produce female offspring aka girl babies swim more slowly than the sperm that produce male offspring but they are also hardier br br this means that boy sperm swim fast but die faster and girl sperm swim more slowly but last longer the shettles method says that to increase your chances of having a girl have sex 3 days before you ovulate and to have a boy have sex the day before you ovulate