hypothesis/prediction
Prediction
Well, first of all, observations about the water need to made. Then, a hypothesis needs to be formed from the observations. Hypotheses should follow the "if, then" format. Ex. If toxins are present in the water, then fish will die. It's just following the scientific method.
scientific method
Well, the scientific process starts with an observation or an idea, then a hypothesis "To guess what happens when its putted to the test" which is the next step, and finally if the hypothesis is correct it changes the original theory, if wrong you have to start over :)
variable
They must test out the new idea, before they can trust it .Or it may not work out the way they planned it would. and so they do not cause an ailergic reaction
Amend or discard the hypothesis
A theory
Scientific Method
a hypothesis
Scientists test hypothesis by setting up an experiment. They choose a independent and a dependent variable and test the experiment.
scientists test their hypothesis buy making observations or doing research
scientists test their hypothesis buy making observations or doing research
Scientists then state another hypothesis and test it out with another experiment.
Test
In a lab or wherever they can conduct an experiment
if your referring to the scientific method, scientists test the dependent variable
...perform a scientific experiment designed to shed light on the hypothesis.