Well I don't know for sure but it can be sound waves.
Answer:
Heat or electricity in the atmasphere
Explanation:
Answer:
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
"some elements have only one stable isotope"
Explanation:
Answer:
The three key things in Science are:
Physical Science,Earth Science and Life Science
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The correct answer would be C. a precipitate
Hope this helped!
