1. The seven common characteristics define our life. First, all organisms consist of cells and form a total organization. Second, all organisms are able to balance internal function and homeostasis. Third, as the environment changes, all organisms also change and develop. Fourth, all organisms need to absorb energy to maintain health condition, so that it can increase metabolism. Fifth, all organisms can overcome outside environmental conditions in order to survive. Sixth, the genes of all organisms are inherited and able to pass to the next generation. Seventh, adaptations of all organisms are too strong to allow them to survive with difficult situations.
2. In order to discover the …show more content…
First of all, a hypothesis is never a certain answer and it can be proved or disprove in scientific filed. People have to use experimental data and natural phenomenon to prove it. On the other hand, a hypothesis should be testable, which means the experiments are able to test and show relative hypothesis. A correct hypothesis should also follow the fixed format such as “If-then”.
4. The experiment plays an important part of the scientific process because it is way to support or against hypothesis. If science process includes enough experiments, the scientists do not only prove the question but also consummate the precision answers.
5. Even though both independent variable and dependent variable are variables, these two variables are different. Independent variables is what we can control and what we can test. Independent variable does not change as others factors change. Inversely, dependent variable changes as other factors change.
6. A control is very necessary in an experiment because a control play a constant example, an independent variable, which we can control in order to compare other examples. Through the comparison, scientists can observe effects and contrast the control and other examples, which have same condition, but the results may same or