Answer the following question given this paragraph: Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms. A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms. Q: Two water molecules contain 4 hydrogen atoms and how many oxygen atoms? Choices: - 1 - 4 - 6 - 2 A:
2
(Question)
Answer the following question given this paragraph: The movement of bone away from the midline of the body is called ________. circumduction b. extension c. adduction d. abduction. Q: The movement of bone away from the midline of the body is called what? Choices: - spring - continuation - flexion - extension A:
(Answer)
extension
Ques: Answer the following question given this paragraph: The dermis is the layer of skin directly under the epidermis. It is made of a tough connective tissue. The dermis contains hair follicles, sweat glands, oil glands, and blood vessels ( Figure above ). It also holds many nerve endings that give you your sense of touch, pressure, heat, and pain. Q: What layer of skin is directly under the epidermis? Choices: - the aponeurosis - hypodermis - sweat glands - the dermis A:
Ans: the dermis
(Q).
Answer the following question given this paragraph: Q: Tissues of marine bony fishes gain what from their surroundings? Choices: - toxins - absorb salts - mercury - excess salts A:
(A).
excess salts
Ques:Answer the following question given this paragraph: Strontium is a silver-colored alkaline Earth metal that is even softer than calcium. Strontium compounds are quite common and have a variety of usesfrom fireworks to cement to toothpaste. In fireworks, strontium compounds produce deep red explosions. In toothpaste, like the one pictured in the Figure below , the compound strontium chloride reduces tooth sensitivity. Q: What is a silver-colored alkaline earth metal that is even softer than calcium? Choices: - mercury - magnesium - lithium - strontium A:

Ans:strontium
Answer the following question given this paragraph: In the absence of a net force, objects move in a straight line. If they turn that is, if their velocity changes, even only in direction there must be an applied force. Forces which cause objects to turn around continuously in a circle are known as centripetal forces. When an object moves in a circle its velocity at any particular instant points in a direction tangent to the circle. The acceleration points towards the center of the circle, and so does the force acting on it. This is only natural, when you think about it if you feel a force pushing you towards your left as you walk forward, you will walk in a circle, always turning left. 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