When rubbing alcohol and water are at room temperature, which one dissolves first

State one important difference between a physical change and a chemical change?

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?

Organisms are classified as producer or consumers according to the way they ?