Breastfeeding helps contract the uterus. Your uterus should be about the size of a lime about 6 weeks after. The shape of your abs is another story and is entirely based on how much weight you gained, the size of your baby, how big your tummy was stretched, and the elasticity of your skin.
Making the world better, one answer at a time. The climate at the beginning of the Paleozoic era was moderate, but managed to stabilize during the mid-era. At the end of the era, the levels of oxygen in the atmosphere increased and carbon dioxide levels decreased.
The second of the great eras of life on earth, the Paleozoic (542 to 250 million years ago) witnessed the evolution of the first complex, multicellular life forms, ranging from the bizarre marine arthropods of the Cambrian Explosion to the mammal-like reptiles of the Permian period.