Big changes in the ecosystem can happen with slight changes in temperature, and global temperature has historically varied directly with CO2 levels from the data that I have seen. (globalclimatescam.com)
The difference between kitten food and cat food is not always very obvious, and most foods generally look the same, with slight changes in size. (mypetneedsthat.com)
If your baby usually sleeps at 7 pm or later, it is possible to start making slight changes in their patterns. (shrewdmommy.com)