Which Statement Best Describes Ecological Succession? (A) Is always caused by human intervention. (B) It occurs after a disturbance. (C) It never occurs in a predictable pattern. (D) It is a series of rapid changes in an ecosystem Answer- The correct answer is (B). It occurs after a disturbance Explanation- Ecological Succession Ecological succession is the gradual change in the structure and composition of biological communities over time, often in response to disturbances or the colonization of new habitats. It occurs in two for... More

Which of the following statements relating to stress is false? (A). Stress is always unhealthy and should be avoided. (B). Stress can affect the mind and the body. (C). Stress causes an automatic physiological response in organisms. (D). Stress is caused by a wide variety of factors. Answer: The correct option is (A) Stress is always unhealthy and should be avoided. Stress can have both positive and negative effects, depending on the situation and how individuals perceive and manage it. When stress is perceived negatively, it ca... More

Which statement best describes a mole? (A) It is used mainly for writing chemical formulas. (B) It is used for chemical equations that have reversible reactions. (C) It is used for directly comparing the amounts of substances. (D) It is used mainly for dealing with fluid substances. Correct Answer: (C). It is used for directly comparing the amounts of substances. Explanation: In chemistry, the term "mole" refers to a unit that measures the quantity of a substance by counting its fundamental particles, such as atoms, molecules... More