What is the GCF of 18 and 30

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?