<span>Ask a Question.Do Background Research.Construct a Hypothesis.Test Your Hypothesis by Doing an Experiment.Analyze Your Data and Draw a Conclusion.<span>Communicate Your Results.</span></span>
<span>* Ask a Question </span> <span>* Do Background Research </span> <span>* Construct a Hypothesis </span> <span>* Test Your Hypothesis by Doing an Experiment </span> <span>* Analyze Your Data and Draw a Conclusion </span> <span>* Communicate Your Results </span>
<span>Ask a Question: The scientific method starts when you ask a question about something that you observe: How, What, When, Who, Which, Why, or Where? </span>
<span>And, in order for the scientific method to answer the question it must be about something that you can measure, preferably with a number. </span>
<span>Do Background Research: Rather than starting from scratch in putting together a plan for answering your question, you want to be a savvy scientist using library and Internet research to help you find the best way to do things and insure that you don't repeat mistakes from the past. </span>
<span>Construct a Hypothesis: A hypothesis is an educated guess about how things work: </span> <span>"If _____[I do this] _____, then _____[this]_____ will happen." </span>
<span>You must state your hypothesis in a way that you can easily measure, and of course, your hypothesis should be constructed in a way to help you answer your original question. </span>
<span>Test Your Hypothesis by Doing an Experiment: Your experiment tests whether your hypothesis is true or false. It is important for your experiment to be a fair test. You conduct a fair test by making sure that you change only one factor at a time while keeping all other conditions the same. </span>
<span>You should also repeat your experiments several times to make sure that the first results weren't just an accident. </span>
<span>Analyze Your Data and Draw a Conclusion: Once your experiment is complete, you collect your measurements and analyze them to see if your hypothesis is true or false. </span>
<span>Scientists often find that their hypothesis was false, and in such cases they will construct a new hypothesis starting the entire process of the scientific method over again. Even if they find that their hypothesis was true, they may want to test it again in a new way. </span>
<span>Communicate Your Results: To complete your science fair project you will communicate your results to others in a final report and/or a display board. Professional scientists do almost exactly the same thing by publishing their final report in a scientific journal or by presenting their results on a poster at a scientific meeting. </span>
They are called the building blocks of an organism because all living things are made up of billions of cells that can reproduce, build and change that's why it is called the building blocks of all living things.
Scientist think colonies of Cyanobacteria called stromatolites were responsible for the introduction of oxygen into earths atmosphere is true.
<u>Explanation:</u>
In primeval earth’s atmosphere, stromatolites (colonies of Cyanobacteria) are believed to have increased the level of oxygen by their photosynthesis process.
These are the first known organisms that started photosynthesis process and produced the oxygen to the earth’s atmosphere.
There is a theory that, these organisms produced oxygen in the environment and the organism disappeared that couldn’t live in the atmosphere with the oxygen.
Scientists gave this a name called as “great oxygenation event”.
Macromolecules contain large number of atoms. Milk contains
both carbohydrates and proteins, because it gave a positive result upon the
addition of Benedict’s solution which indicated an orange color. It means that
there is a concentration of reducing sugars in milk.
