Just help if you can be very appreciated :) thank you match the one which is correct from the number to letter

1. ) Litre - Basic metric unit of volume

2.) Metric system - Used by science and the rest of the world

3.) Gram - Basic metric unit of mass

4.) British system - System of pounds , feet and gallons

5.) Meter - Basic metric unit of length

Hope this helps you

youre right there are

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 !