Which of the following steps is usually done right before experimentation in the scientific method of investigation?

construct a hypothesis
ask a question
do background research
analyze data and draw conclusions

Achild is suffering from fever but the doctor cannot immediately pinpoint the alignment on the basis of this one symptom explain why also mention other two such general symptoms

9. the history of life on earth is recorded in

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers