Q: While light travels at different speeds in different kinds of matter, the speed of light is constant in what condition? Choices: - outer space - through glass - under water - vacuum A:
vacuum

(Question)
Q: What is the cause of most ocean waves? Choices: - tides - Magnetic pull - Gravity - winds A:
(Answer)
winds

Ques: Q: What gland is a butterfly-shaped organ located in the neck anterior to the trachea? Choices: - pituitary gland - pineal gland - adrenal gland - thyroid gland A:
Ans: thyroid gland

(Q).
Q: What kind of reactions between an acid and a base yield a salt and water? Choices: - oxidation - evaporation - distillation - neutralization A:
(A).
neutralization

Ques:Q: What a mixture of nitric acid and hydrochloric acid? Choices: - crystal regia - acidus regia - sulfate regia - aqua regia A:

Ans:aqua regia

Question: Q: What guards the opening between the right atrium and the right ventricle? Choices: - superior vena cava - brachiocephalic trunk - aorta - tricuspid valve A:
Answer:
tricuspid valve