What is another term used for "Continuous Line Drawing?"

What types of visual art mediums are heavily based on observation?

Which baroque artist from a protestant country did not produce work for the catholic church? a. michelangelo b. rembrandt van rijn c. peter paul rubens

Riddle me this: i am first in earth,second in heaven,appear two times in aweekyou can only see meonce in a year, althoughi'm in the middle of sea.what am i?