Which physical properties do all stars have? Check all that apply.
They are made of gases.
They shine very brightly.
They have a spherical shape.
✓ They contain iron in their cores.
They make energy through fusion.

Quickly! ill give you brainliest + free points the best approach to keeping your car in safe working order is to a. have a friend inspect it b. get a professional tune-up c. listen to the engine while it's running d. clean the interior and exterior once a month

During the decline of the harappan civilization, which group came to power in the indus valley

Which of the following is not true about hydroelectricity a. use of gravitational force of flowing water b. its the most widely used renewable energy c. it has a high output of co2 that fossil fuels d. it has no direct waste asap