Where does Ta, Os, Rh comes from?

Tantalium (Ta) is found uncombined in nature. It is found in coloumbite-tantalite. Tantalium also comes as a result of Mining. It is separated from others by Electrolysis.

Osmium comes when there is a reaction of Nickel refining as by-product. It is rare element which is found naturally as a free element. It is also found naturally in Alloys with copper and nickel.

Rhodium is obtained as the by-product of Copper as well as Nickel refining.

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Explanation:

The scientific method is to observe and ask questions, research the topic, make a hypothesis, test the experiment, observe the outcome, and see the end product. So my first step is to make ask a question such as "Is almond butter healthier than peanut butter?". Then I would look up the nutritional facts for both peanut butter and almond butter. Next, I would create a hypothesis such as "If almond butter has better nutritional facts on the label, then it is healthier than peanut butter.". After that, I would compare the nutrition value to see which one is healthier. Finally, I would see my results in which product is healthier.