Help me on all those including the second one (extra point for hardness)

1. Lithosphere

2. Where things are. Exact points on the surface of the earth. Represent the distance of any location from the center of the Earth

Summery. Longitude and latitude are lines that run across Earth's surface to locate points on the globe

4. B. hydrosphere

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !