Anyone know this? if so could you please help me out!!

What do scientists need to look at before developing an argument

What is the 77 element on the periodtic table

Label the following as inner or outer planets; a) has 67 moons made mostly of hydrogen and helium b) has rings c)no moons, high volcanic activity d) known as the red planet, has 2 moons e) very thin atmosphere, moons or rings