She would find oxygen (O2) in the test tube because plants give off oxygen
The answer is called heat energy. Hope this helps.
Polypeptide chains consist of monomers called amino acids. There are 20 types of amino acids that are usually able to create peptides and proteins.
The correct answer is ocean
The water that is naturally occurring in the nature expect the seawater, water in the ocean, backish water is freshwater.
The least likely fresh water reservoir is ocean water, which is salty in nature. This has high concentration of dissolved salts in it.
This water cannot be used as potable water employed for the commercial and drinking purposes.