If you mean climate change. Then scientists can study it by seeing where places and things are eroded.
Answer:
Why is Ruben confident that this is a reliable source? The source contained advertisements of promotional products. The source focused solely on the global spread of other diseases. The information was provided by a governmental source
C. A shared public ledger on which entire bitcoin network relies
<span>c. the atmosphere, the biosphere and the water cycle</span>
