1 The most abundant greenhouse gas, but importantly, it acts as a feedback to the climate. 2  Water vapor increases as the Earth's atmosphere warms, but so does the possibility of clouds and precipitation, making these some of the most important feedback mechanisms to the greenhouse effect. 3  Carbon dioxide (CO 2).
Also called elimination communication or natural infant hygiene, infant potty training is the practice of introducing your baby to the toilet or potty at a very early age â usually between birth and 4 months.
Potty training in three easy steps (age 2) Here's how you can best help your child tackle potty training. Milestones (ages 2 to 4) Social, cognitive, and physical developments to expect in children between ages 2 and 4.