Answer: Yes it is. Rust would be considered a chemical reaction because it changes the chemical makeup of the metal.
Explanation:
Answer: technetium-99.
Explanation:
This is not an answer that you can look for in a book.
You need to do some research.
You can fiind the abstract of the article titled <span>Molecular imaging of atherosclerosis using a technetium-99m-labeled endothelin derivative.</span>
The conclusion of this scientific article is that labeling with the radiosotope Tc - 99 iis feasibele to visualize the effects of an experiment inducing atherosclerosis, which gives the answer to the question posted.
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This is because the animals with the favorable traits would survive. Therefore they will be the only ones left because they were able to adapt to the environment. And when they breed, the offspring will gain those favorable and the less favorable traits will continue to not be used which is why they “fade away” overtime.
Talking about ions, a cation has a positive charge. That means a positive charge is gained by an atom that gives out electrons.
