Pure forms of carbon. Carbon is everywhere: it forms rocks, plants, animals (proteins, DNA, etc), plastics, etc. Those usually contain carbon as well as other atoms, like nitrogen, oxygen and hydrogen among others. There are some materials, however, that contain only carbon.
The Healthy Pregnancy Book: Month by Month, Everything You Need to Know from America's Baby Experts (Sears Parenting Library) Paperback â September 24, 2013. Find all the books, read about the author, and more.
In addition, the book also covers the care of healthy women whose pregnancy is at markedly increased risk for adverse outcome from conditions such as multiple birth, recurrent pre-term labor and delivery, premature rupture of membranes, recurrent pregnancy loss, or fetal growth restriction.