Ques: Q: What type of force exists between two touching surfaces? Choices: - opposing - centrifugal - tension - friction A:
Ans: friction

Ques: Q: Which continent is the only one that reptiles don't inhabit? Choices: - Africa - South America - Europe - antartica A:
Ans: antartica

Ques: Q: The highest point of a wave is called? Choices: - surge - threshold - frequency - crest A:
Ans: crest

Ques: Q: Respectively, which parts of the circulatory system carry blood from the heart toward capillaries, and return blood to the heart from capillaries? Choices: - parasites and veins - arteries and capillaries - organs and veins - arteries and veins A:
Ans:
arteries and veins