Q: What in hemoglobin gives red blood cells their red color? Choices: - calcium - lead - barium - iron A:
iron

(Question)
Q: What is a measure of the size of sound waves? Choices: - voltage - wavelength - frequency - amplitude A:
(Answer)
amplitude

Ques: Q: Tuataras, lizards, and snakes are members of what subclass of reptiles? Choices: - dinosaurs - arthropods - staurikosaurus - lepidosaurs A:
Ans: lepidosaurs

(Q).
Q: If two populations do not mate and produce fertile offspring, what results? Choices: - same species - large species - small species - separate species A:
(A).
separate species

Ques:Q: Atoms of the same element that have different masses are called what? Choices: - variations - radioactive - mutations - isotopes A:

Ans:isotopes

Ques: Q: Eventually the parent cell will pinch apart to form two identical types of what cells? Choices: - brother cells - father cells - son cells - daughter cells A:
Ans:
daughter cells