Q: Answer the following question given this paragraph: Metamorphism changes rocks by heat and pressure. These agents create an entirely new type of rock. Metamorphism changes rocks physically and/or chemically. Q: Which process changes rocks by heat and pressure? A:

OPTIONS:
- sediments
- Changes
- weathering
- metamorphism

A: metamorphism

input: OPTIONS:
- similar notation
- scientific diffusion
- certain diffusion
- scientific notation Now, answer this question: Answer the following question given this paragraph: Very small numbers can also be expressed using scientific notation. The mass of an electron in decimal notation is 0.000000000000000000000000000911 grams. In scientific notation, the mass is expressed as 9.11 10 -28 g. Notice that the value of the exponent is chosen so that the coefficient is between 1 and 10. Q: What system can be used by scientists to express very small numbers? A:
A:
output: scientific notation

Answer the following question given this paragraph: The skeleton supports the body and gives it shape. It has several other functions as well, including:. Q: What gives the body shape and support? A:

OPTIONS:
- organs
- muscles
- gravity
- skeleon

Answer: skeleon

Problem: OPTIONS:
- the sclerotic cord
- the dynamic cord
- the lateral cord
- the spinal cord
Q: Answer the following question given this paragraph: User:Grm_wnr/Wikimedia Commons, modified by CK-12 Foundation. The central nervous system is composed of the brain and the spinal cord . Public Domain. Q: The central nervous system is composed of the brain and what else? A:
Answer: the spinal cord

Problem:OPTIONS:
- cells
- tissues
- organs
- lipids

Answer the following question given this paragraph: Lipids play several important roles in the body. Triglycerides are stored in fat cells until the body needs to break them down for chemical energy. These stored triglycerides also help insulate the body against extreme temperatures and cushion organs against physical jostling. Phospholipids and cholesterol are important constituents of the cell membrane. These compounds provide structural integrity to the cell wall, since they are not water-soluble. Other steroids are used as chemical messengers in the body, and the fat-soluble vitamins serve a variety of other functions. Q: What play several important roles in the human body? A:
****
A: lipids

Problem:OPTIONS:
- lungs
- white blood cells
- alveoli
- blood vessels

Answer the following question given this paragraph: The structure of the different types of blood vessels reflects their function or layers. There are three distinct layers, or tunics, that form the walls of blood vessels (Figure 40.16). The first tunic is a smooth, inner lining of endothelial cells that are in contact with the red blood cells. The endothelial tunic is continuous with the endocardium of the heart. In capillaries, this single layer of cells is the location of diffusion of oxygen and carbon dioxide between the endothelial cells and red blood cells, as well as the exchange site via endocytosis and exocytosis. The movement of materials at the site of capillaries is regulated by vasoconstriction, narrowing of the blood vessels, and vasodilation, widening of the blood vessels; this is important in the overall regulation of blood pressure. Veins and arteries both have two further tunics that surround the endothelium: the middle tunic is composed of smooth muscle and the outermost layer is connective tissue (collagen and elastic fibers). The elastic connective tissue stretches and supports the blood vessels, and the smooth muscle layer helps regulate blood flow by altering vascular resistance through vasoconstriction and vasodilation. The arteries have thicker smooth muscle and connective tissue than the veins to accommodate the higher pressure and speed of freshly pumped blood. The veins are thinner walled as the pressure and rate of flow are much lower. In addition, veins are structurally different than arteries in that veins have valves to prevent the backflow of blood. Because veins have to work against gravity to get blood back to the heart, contraction of skeletal muscle assists with the flow of blood back to the heart. Q: Three distinct layers or tunics form the walls of what structures; the first is a smooth, inner lining of endothelial cells in contact with the red blood cells? A:
****
A:
blood vessels