The answer could be numerous types of drugs, but i believe alcohol is your best bet
Answer: there are islands
Explanation:
G1, S, and G2 The cell cycle has 4 phases those 3 and M phase... G1, S, and G2 together are called interphase.
An independent variable that is manipulated means to achieve a particular effect or tested to determine if it is the cause of the effect.
For example, to find out if your weight depends on the amount of calories you consume, you could lower your caloric intake (calories is the manipulated variable) for a period of time and see how your weight changes in response.