Give an example of a scientific investigation that would require both observations and experiments

When a small amount of DNA is found in human saliva on a glass at a crime scene, how do forensic scientists analyze the saliva to find a suspect?

The function of an operator is to

Which of the following is NOT a fate of a protein that is produced by the rough ER? It functions inside of an organelle that is a member of the endomembrane system. It functions in the cytoskeleton as a tubulin component of microtubules.

What is a derived trait in biology 1

Which of the following is a fat which thickens when reduced? Pectin, Cream, Flour, Butter

Which is true of the regions near earth's equator

Which plant cell organelle converts chemical fuel into packets of chemical energy that can power the cell?

What is the casparian strip? why is it important?

Beethovens final symphony no. 9 was the first symphony to ever use what?

How do elements reach stability?