Answer the following question given this paragraph: Although renewable, soil takes a very long to formup to hundreds of millions of years. So, for human purposes, soil is a nonrenewable resource. It is also constantly depleted of nutrients through careless use and eroded by wind and water. For example, misuse of soil caused a huge amount of it to simply blow away in the 1930s during the Dust Bowl (see Figure below ). Soil must be used wisely to preserve it for the future. Conservation practices include contour plowing and terracing. Both reduce soil erosion. Soil also must be protected from toxic wastes. Q: What resource is considered nonrewable for human purposes, because it takes so long to form and is depleted by farming and other activities? Choices: - water - acid - sunshine - soil A:
soil
Answer the following question given this paragraph: Dermal tissue covers the outside of a plant in a single layer of cells called the epidermis. You can think of the epidermis as the plant's skin. It mediates most of the interactions between a plant and its environment. Epidermal cells secrete a waxy substance called cuticle , which coats, waterproofs, and protects the above-ground parts of plants. Cuticle helps prevent water loss, abrasions, infections, and damage from toxins. Q: What is the waxy substance that epidermal cells secrete? Choices: - cellulose - bile - saliva - cuticle A:
cuticle
Q: Answer the following question given this paragraph: Saturated hydrocarbons contain only single bonds between carbon atoms. They are the simplest hydrocarbons. They are called saturated because each carbon atom is bonded to as many hydrogen atoms as possible. In other words, the carbon atoms are saturated with hydrogen. You can see an example of a saturated hydrocarbon in Figure below . Each carbon atom is bonded to three hydrogen atoms in this compound, which is named ethane. Q: What are the simplest hydrocarbons? Choices: - unsaturated hydrocarbons - complex carbohydrates - fossil fuels - saturated hydrocarbons A:
A: saturated hydrocarbons
Question: Answer the following question given this paragraph: Osteoporosis is a disease in which bones lose mass and become more fragile than they should be. Osteoporosis also makes bones more likely to break. Two of the easiest ways to prevent osteoporosis are eating a healthy diet that has the right amount of calcium and vitamin D and to do some sort of weight-bearing exercise every day. Foods that are a good source of calcium include milk, yogurt, and cheese. Non-dairy sources of calcium include Chinese cabbage, kale, and broccoli. Many fruit juices, fruit drinks, tofu, and cereals have calcium added to them. It is recommended that teenagers get 1300 mg of calcium every day. For example, one cup (8 fl. oz. ) of milk provides about 300 mg of calcium, or about 30% of the daily requirement. Other sources of calcium are pictured in the Figure below . Q: What mineral that occurs in bones helps combat osteoporosis? Choices: - magnesium - iron - potassium - calcium A:
Answer: calcium
*Question*
Answer the following question given this paragraph: Proteins are one of four classes of biochemical compounds. Proteins contain carbon, hydrogen, oxygen, nitrogen, and sulfur. Q: Proteins are one of four classes of what type of compounds? Choices: - hormonal - genetic - synthesized - biochemical A:
**Answer**
biochemical
(Q).
Answer the following question given this paragraph: Atherosclerosis is a condition in which a material called plaque builds up inside arteries. Plaque consists of cell debris, cholesterol, and other substances. As plaque builds up in an artery, the artery narrows, as shown in Figure below . This reduces blood flow through the artery. Q: What is a condition in which a material called plaque builds up inside arteries? Choices: - scoliosis - fibrosis - arthritis - atherosclerosis A:
(A).
atherosclerosis