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.
When children are about a year old, they can begin to recognize that they have a full rectum or bladder. Some are ready to start potty training as early as 18 months, while others aren't interested until after age 3. Many parents begin potty training when their children are about 2 1/2.