1. On the basis of one or more observations of natural phenomena, a testable explanation called a (Click to select) hypothesis conclusion control is formed.
2. A hypothesis is tested with a series of procedures called (Click to select) publications theories experiments .
3. Results from experiments called (Click to select) data variables theories either support or do not support the hypothesis.
4. The data help scientists to form (Click to select) conclusions variables phenomena , some of which may encourage them to redesign their experiments or formulate a new hypothesis.