Because a hypothesis is different from the research question, research is usually required before you make a hypothesis. A hypothesis is a prediction of the test that is about to incur. Without the research the people doing the test would not know what to be looking for or how to setup the test. Because of the reason;
I assume the answer is, after generating an idea from an observation.
Answer:Water evaporates, salt does not. When water evaporates, the salt stays behind while the water leaves into the atmosphere; making the ocean more saline.
Explanation:
DNA is tightly wrapped around his tones, then those his tones tightly wrap together to form chromosomes.
Answer:
The end result looks different from the start, but contains the same amount of each atom.
Explanation:
6CO2 + 6H20 --> 6O2 + C6H12O6
Reactants Products
Even though the reactants look different to the products they contain the same amount of each atom.
The following chemicals can be found in plant cells.
Chemicals in plant cells:
oxygen
carbon<span>
</span>hydrogen
phosphorus
nitrogen
sulfur
I hope this helps!