Q: What is the force of attraction between two masses? Choices: - electricity - inertia - momentum - gravity A:
gravity

(Question)
Q: By pulling out grass by its roots and over-grazing, livestock contribute to what negative process? Choices: - migration - evolution - immigration - erosion A:
(Answer)
erosion

Ques: Q: What is a sac-like organ at the end of the esophagus? Choices: - appendix - larynx - spleen - the stomach A:
Ans: the stomach

(Q).
Q: What is the most dangerous type of radiation? Choices: - sunlight rays - beta rays - plasma rays - gamma rays A:
(A).
gamma rays

Ques:Q: What are the cells or structures that detect sensations? Choices: - hormones - membranes - proteins - receptors A:

Ans:receptors

Q: Which organ breaks down amino acids and toxins that are in the blood? Choices: - skin - kidney - small intestine - liver A:
liver