Q: What is an alloy of copper and tin? Choices: - zinc - gold - silver - bronze A:
bronze

(Question)
Q: What determines the strength of a base when dissolved in water? Choices: - amount of phosphorus ions produced - pH level - saline content - amount of hydroxide ions produced A:
(Answer)
amount of hydroxide ions produced

Ques: Q: What layer covers the bones that make them look tough, shiny, and white? Choices: - epithelium - cuticle - epidermis - periosteum A:
Ans: periosteum

(Q).
Q: What is the tissue beneath a mollusks' shell called? Choices: - cartilage - skin - mucous - mantle A:
(A).
mantle

Ques:Q: Particulates cause lung diseases. they can also increase the risk of heart disease and the number of what? Choices: - coughing - cancer - shortness of breath - asthma attacks A:

Ans:asthma attacks

Ques:Q: The size and symmetry of a beetle's or an elk's antlers or a grasshopper's song communicate rather clearly their state of what? Choices: - society - problem - need - health A:

Ans:
health