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.
Dietician. It is safe to drink green tea during pregnancy, in moderation. About three or four cups of green tea a day is a sensible limit. Green tea has been thought to be a health-promoting drink since ancient times. However, recent research has cast doubts over its benefits during pregnancy and has even raised some concerns about its safety.