False. Pure substances that cannot be broken down into simpler substances by ordinary chemical means are called Elements.
We could say that there are five steps in scientific method: observation, hypothesis, prediction, experiment and conclusion. Observation is the first step and we could also call it research. In this step we must understand the problem in the right way. The hypothesis is the possible answer, based on the research. Prediction is even more specific than the hypothesis: on this stage, you must know how will you demonstrate that your hypothesis is true. Experiment tests your hypothesis and shows whether your hypothesis was true or false. After that you can proceed to making conclusion, which summarizes the experiment's results, and tells do the results match up to hypothesis and in which way.
Thorax is the body segment of an insect supports the legs and wings.
Since guanine - cytosine and adenine - thymine are are always paired in the DNA, the amount of cytosine is approximately the same as guanine and the amount of thymine is approximately the same as adenine
