Please help Explain how scientists classify galaxies. How does our Milky Way galaxy compare to other galaxies? (please use one or two sentences to explain)

What is the name of the two satelites on mars

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2

What process creates gametes? a.fertilization b.mitosis c.meiosis