Which of the following describes a planet?? Burning ball of gases that emits its own light
Large body of rock that revolves around the sun
Large, round body that revolves around a star
Round object that revolves around a moon

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

ugh fiel iente of insistí is did kiwis jaj

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.