In order for me to assist you, you must attach an image of the graph. :)
Answer:
A.
Explanation:
because it studies the key word Astro which means astrophysics which is stars good luck
I think its harmful, because its unhealthy for workers and its harmful to the environment and to the people. Its also a waste of water and it pollutes the air.
hope that i helped and sorry if i was too late.
Answer:
it is a category of star. our sun is a white dwarf
Explanation: