Answer the following question given this paragraph: Molds and casts are another way organisms can be fossilized. A mold is an imprint of an organism left in rock. The organism's remains break down completely. Rock that fills in the mold resembles the original remains. The fossil that forms in the mold is called a cast ( Figure below ). Molds and casts usually form in sedimentary rock. With compression ( Figure below ), an organism's remains are put under great pressure inside rock layers. This leaves behind a dark stain in the rock. Q: Molds and casts usually form in which type of rock? Choices: - igneous - metamorphic - crystalline - sedimentary A:
sedimentary
Answer the following question given this paragraph: Muscles can only contract. They cannot actively extend, though they can move or relax back into the non-contracted neutral position. Therefore, to move bones in opposite directions, pairs of muscles must work in opposition. Each muscle in the pair works against the other to move bones at the joints of the body. The muscle that contracts to cause a joint to bend is called the flexor . The muscle that contracts to cause the joint to straighten is called the extensor . When one muscle is contracted, the other muscle from the pair is always elongated. Q: What is the name of the muscle that contracts to cause the joint to straighten? Choices: - flexor - abductor - opposing - extensor A:
extensor
Q: Answer the following question given this paragraph: The partial pressure of each gas in a mixture is proportional to its mole fraction. KEY EQUATIONS Mole fraction. Q: The partial pressure of each gas in a mixture is proportional to its what? Choices: - chemical fraction - lactic fraction - mesh fraction - mole fraction A:
A: mole fraction
Question: Answer the following question given this paragraph: The solubility of a substance is the amount of that substance that is required to form a saturated solution in a given amount of solvent at a specified temperature. Solubility is often measured as the grams of solute per 100 g of solvent. The solubility of sodium chloride in water is 36.0 g per 100 g water at 20C. The temperature must be specified because solubility varies with temperature. For gases, the pressure must also be specified. Solubility is specific for a particular solvent. We will consider solubility of material in water as solvent. Q: What term means the amount of a substance required to form a saturated solution in a given amount of solvent at a specified temperature? Choices: - viscosity - concentration - turbidity - solubility A:
Answer: solubility
*Question*
Answer the following question given this paragraph: Q: What are the two main parts of the human nervous system? Choices: - lungs, brain - lungs, spinal cord - brain, heart - brain, spinal cord A:
**Answer**
brain, spinal cord
(Q).
Answer the following question given this paragraph: A: The wave travels down the string to the end. The string vibrates up and down at right angles to the direction of the wave. Q: When a wave travels down a string, the string vibrates up and down at right angles to the wave's what? Choices: - frequency - pressure - gravity - direction A:
(A).
direction