Ques: Q: What is the tail bone an example of? Choices: - invertebrate structure - parasitic structure - primordial structure - vestigial structure A:
Ans: vestigial structure

Ques: Q: The normal response of the respiratory system to elevated ph is to increase the amount of what in the blood? Choices: - glucose - acid - red blood cells - co2 A:
Ans: co2

Ques: Q: What lengths are positive for converging lens and negative for diverging lens? Choices: - light lengths - wavelengths - differential lengths - focal lengths A:
Ans: focal lengths

Ques: Q: Isotopes have different number of these in their nuclei? Choices: - protons - electrons - atoms - neutrons A:
Ans:
neutrons