Dusty Disk Systems, Hot Jupiter Systems, Non-planetary systems.
Man made,moon,sun
The three main types of payroll systems are manual, software and external.
Kelvin, Celsius, and Fahrenheit are three different systems used to measure temperature
nuclear,electrical, solar
Wind, Solar, Water, Geothermal
1] nuclear 2] electrical 3] solar
They are in all three. Planets are in solar systems. There are lots of solar systems in a galaxy. There are lots of galaxies in the universe. So any planet is in a solar system, a galaxy and the universe.
The three main types of solar energy are solar thermal, photovoltaic, and concentrated solar power. Solar thermal systems convert sunlight into heat, while photovoltaic systems convert sunlight directly into electricity. Concentrated solar power systems use mirrors or lenses to focus a large area of sunlight into a small beam for heat or electricity generation.
Market economy,traditional economy,command economy and mixed economy
you say there is three different kinds of volcanoes when there are six different kinds of volcanoes
The three different types of solar cookers are box, panel,and parabolic.
The three different kinds of fats are: Saturated Fats, Monounsaturated Fats, and Polyunsaturated Fats. Hope this is what you were looking for!