Q: What force holds together both types of star clusters? Choices: - weight - magnetism - inertia - gravity A:
gravity

(Question)
Q: How many classes of biochemical compounds are there? Choices: - one - five - three - four A:
(Answer)
four

Ques: Q: Labor is the muscular contractions to expel the fetus and placenta from where? Choices: - lungs - anus - tumors - uterus A:
Ans: uterus

(Q).
Q: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms? Choices: - enzymes - collagen - essential amino acids - antibodies A:
(A).
antibodies

Ques:Q: What is used to record seismic waves? Choices: - transmitter - odometer - topometer - seismograph A:

Ans:seismograph

Q: What is the term for when gravity pulls soil, mud, and rocks down cliffs and hillsides? Choices: - mass pressure - avalanche - mass momentum - mass movement A:
mass movement