(Q).
Q: How do you determine the atomic weight of an element? Choices: - multiply protons and neutrons - subtract protons from electrons - divide protons and neutrons - add up protons and neutrons A:
(A).
add up protons and neutrons

(Q).
Q: Not even light can escape from what extremely dense object sometimes found in deep space? Choices: - large holes - light holes - star holes - black holes A:
(A).
black holes

(Q).
Q: Hair is a component of which bodily system? Choices: - circulatory - relatable system - trypeta system - integumentary system A:
(A).
integumentary system