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During Step 4 of the seven S’s of crime scene investigation, two fixed reference points are used for _____.

Knowing the shoe size of a bloody footprint tells us that someone with that shoe size was at the scene, allowing us to exclude persons with other shoe sizes, which is an example of _____.

Locate a permanent, fixed point of reference, called a _____, when creating a collection site.

In an experiment to test the effectiveness of a new drug, what would the control group most likely receive?

Which of the following best describes an independent variable in an experiment?

In a water molecule, oxygen is bonded to hydrogen atoms by _________ bonds, whereas neighboring water molecules are held together by __________ bonds.

Which statement correctly identifies the dependent and independent variables in the following experiment: “Testing how different concentrations of salt affect the rate at which ice melts”?

Which of the following are characteristics of  saturated fatty acid chains?  Select Two.

Starch digestion begins in the __________ and protein digestion begins in the __________.

Humans store which long term storage molecule in the liver and muscles?