You should only have one question that you want to focus on. Your investigation will be about writing a Hypothesis (Prediction) for this question. Knowing what you what to change as you investigate this question (your independent variable). Knowing what you will measure (dependent variable). Collecting data. Analyzing this data. writing a conclusion that includes your background research. Explaining wether your data (evidence) supports or refute your hypothesis (prediction). So, Let's start with your question. (one question that you want to investigate). Do this for a chance to win 2000 dollars