Q: Limestone is insoluble in water, so what can dissolve it? Choices: - calcium - dioxide - oxygen - acid A:
acid

(Question)
Q: The loss of oxygen to the heart muscle causes that part of the tissue to what? Choices: - beat harder - thrive - beat erratically - die A:
(Answer)
die

Ques: Q: What is the midpiece of sperm packed with? Choices: - protein - glucose - urine - mitochondria A:
Ans: mitochondria

(Q).
Q: Behaviors that occur naturally and are not learned are called what? Choices: - adaptive - intuitive - acquired - innate A:
(A).
innate

Ques:Q: What "kind" of water may take longer to become contaminated than surface water, while the natural cleaning process may take longer? Choices: - lake water - spring water - dam water - groundwater A:

Ans:groundwater

Question: Q: What are the smallest type of blood vessel? Choices: - varicose veins - spider veins - arteries - capillaries A:
Answer:
capillaries