Q: In what unit is speed usually measured? Choices: - radians - calories - Celcius - miles per hour A:
miles per hour

(Question)
Q: What do you call a unique substance formed when two or more elements combine chemically? Choices: - component - mixture - solution - compound A:
(Answer)
compound

Ques: Q: Cells with different functions often differ in what physical property? Choices: - density - size - weight - shape A:
Ans: shape

(Q).
Q: Which human body system is a complex network of nervous tissue that carries electrical messages throughout the body? Choices: - the localized system - the lymph system - the bacterial system - the nervous system A:
(A).
the nervous system

Ques:Q: What are electromagnetic waves with the longest wavelengths called? Choices: - channel waves - sound waves - infrared waves - radio waves A:

Ans:radio waves

Question: Q: What are the most common roundworm parasites of people in the u. s.? Choices: - cutworms - leeches - hookworms - pinworms A:
Answer:
pinworms