Q: What is an odorless white solid that is harmless unless consumed in large quantities? Choices: - Hydrogen - carbon chloride - oxygen chloride - sodium chloride A:
sodium chloride

(Question)
Q: Covering about 16 percent of the moon's surface, maria are dark, solid, flat areas consisting of what substance? Choices: - debris - ash - dust - lava A:
(Answer)
lava

Ques: Q: What is the term for the relationship in which one species benefits while the other species is harmed? Choices: - combative relationship - commensal relationship - parasitic relationship - symbiotic relationship A:
Ans: symbiotic relationship

(Q).
Q: What kind of motion characterizes waves? Choices: - round - breathing - bending - repetitive A:
(A).
repetitive

Ques:Q: What does the thymus gland produce? Choices: - b cells - insulin - hormones - t cells A:

Ans:t cells

Question: Q: Scientists utilize what natural process to teach cranes born in captivity to migrate along safe routes? Choices: - natural selection - neuroimaging - expediting - imprinting A:
Answer:
imprinting