An experimental group is the group in an experiment that receives the variable being tested. One variable is tested at a time. The experimental group is compared to a control group, which does not receive the test variable. In this way, experimental groups are used to find answers in an experiment.
1 At around 9 months of age, babies begin to pull themselves up to a standing position. 2  By 10 months of age, a baby should be able to grasp objects with thumb and forefinger.
Born with blue eye colour. Most of the new born have blue eyes right after their birth. This is because of the absence of the melanin tissue during birth. After the age of six months or one year in some cases, the melanin tissue starts getting activated, changing their eye colour.he reason behind this is that they sleep for about 14 â 15 hours a day and rest of the time they just sit, eat and sleep. Now you know why they double up in weight. Yes, diaper changing sessions for babies is a long tern procedure which goes on till the baby is around 2 - 3 years of age.