Fatty acids that have double bonds within the carbon chain (and therefore fewer hydrogen atoms).
Answer:
scanning electron microscopy (SEM)
Explanation:
Answer: D
Explanation: As the independent variable is the variable that is changed to see a difference in results (to compare results) we know they want to test different amounts of time to see whether 30 minutes will help their grades improve, so the independent variable is the time spent studying, hope this helped
Glacier or valley Glacier
