A control group in a scientific experiment is a group separated from the rest of the experiment, where the independent variable being tested cannot influence the results. This isolates the independent variable's effects on the experiment and can help rule out alternative explanations of the experimental results
"Marin drank heavily while she was pregnant, so it is possible that the infant has fetal alcohol spectrum disorder."
This disorder is characterised by several physical features including a smaller head perimeter, <span>low body weight,</span> and also several other cognitive and sensory deficiencies. The disorder takes place when the mother has drunk alcohol through her pregnancy. Although it is not sure what's the exact biological pathway that leads to the disorder, it is known that a fetus has much less antioxidant protection or enzymes than adults.
Nucleus
The DNA is located in the nucleus which are chromosomes
It's empty or fairly large, making the sounds from your hands bounce of the walls and therefore having it echo
