Answer:
Human Anatomy is a study of the human body as a structure. Human anatomy is essential to art because it reflects the movement of the body in a true form. It is significant for an artist to study human anatomy because it helps in understanding the muscular and skeleton surface of the human body.
Black holes are important to our universe because it spreads atoms threw the universe.
Answer:
from what i can see its cross-hatching possibly stippling tho :/
Answer: I cannot answer this.
Explanation: It is a very vague question it needs more detail to be answered.