Q: Two water molecules contain 4 hydrogen atoms and how many oxygen atoms? Choices: - 1 - 4 - 6 - 2 A:
2

(Question)
Q: The movement of bone away from the midline of the body is called what? Choices: - spring - continuation - flexion - extension A:
(Answer)
extension

Ques: Q: What layer of skin is directly under the epidermis? Choices: - the aponeurosis - hypodermis - sweat glands - the dermis A:
Ans: the dermis

(Q).
Q: Tissues of marine bony fishes gain what from their surroundings? Choices: - toxins - absorb salts - mercury - excess salts A:
(A).
excess salts

Ques:Q: What is a silver-colored alkaline earth metal that is even softer than calcium? Choices: - mercury - magnesium - lithium - strontium A:

Ans:strontium

Q: Forces which cause objects to turn around continuously in a circle are known as? Choices: - frictional forces - tension forces - hydrodynamic forces - centripetal forces A:
centripetal forces