Most of the time they write down what they are going to do, what they think will happen judging on what they are using. Then they go from there
Observations.
observations
An observation
Observation
Scientists make observations to help them make a hypothesis or collect data during an experiment.
Expirament
stove
Observations
Observations
They make experimental condensation of the eutrofication. ! ;)
The information collected during an experiment is called data. Scientists make observations to help them make a hypothesis or collect data during an experiment.
To make a hypothosis scientists need to know their facts and remember a hypothosis is just a guess, scientists can be wrong.
your conclusion
observations
Observations
observations