42. Which of the following best explains why planting trees and putting up urben gardens can help prevent global warming? A. Plants perform photosynthesis B. Plants produce oxygen during daytime and perform transpiration C. Plants absorb carbon dioxide that contributes to the rising of earth's temperature D. Plants use up carbon dioxide during photosynthesis, release oxygen to the environment, and perform transpiration 43. When cells break down food into chemical energy it undergoes three major processes, glycolysis, Krebs cycle and electron transport Which of these processes provides the most number of ATP molecules? A. Glycolysis C. Electron transport chain B. Krebs cycle D. No idea 44. Sugarcane juice is used in making table sugar which is extracted from the stem of the plant Trace the path of sugar molecules found in the stem from where they are produced A Root --- stem C. flowers - leaf -- stem B. Leafstem D. roots leaf - stem 45. Oxygen is essential in cellular respiration. What is the role of oxygen in the electron transport chain? A. It forms water B. It releases an electron C. It serves as the final acceptor D. It provides a high energy proton 46. What is the term used to refer the variety organism in a certain place? A. Biodiversity C. Home B. Community D. Population 47. Which is the major cause of wildlife depletion? A Floods C. Over harvesting B. Loss of habitat D. Soil erosion 43. What do call the society that should live under the carrying capacity of the environment? A. Sustainable society C. Limiting capacity B. Sustainable development D. Population density 49. What will happen if the population size rises above the carrying capacity? A The organisms will have more chance of survival B. The organisms will find a way to become successful C The organisms die, because they cannat meet all their needs D. The organisms will have higher chance of meeting their needs 50. When does extinction happen? A It happens when the last member of the organism dies B. It happens when the last member of the organism survives C. It happens when the last number of the organism increases D. It happens when the population of the organism starts decreasing rapidly
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