Biology Chapter 4 Question and answers

Biology Chapter 4 Question and answers Year after year, Xavier Raises a vegetable garden in the same plot of soil. He observes that the plants grow less abundantly from one year to the next, and they produce fewer of vegetables. Which of these processes could help explain Xavier's observations? a. The rate at which soil bacteria perform photosynthesis b. The rate at which soil bacteria perform denitrification c. The rate at which soil bacteria perform nitrogen fixation d. The rate at which soil bacteria perform chemosynthesis - c. The rate at which soil bacteria perform nitrogen fixation Autotrophs can be classified into two groups According to which of these properties? a. Energy source, either sunlight or chemicals b. Food type, either plant matter or animal matter c. Food quality, either living matter or dead matter d. Water quality, either freshwater or saltwater - a. Energy source, either sunlight or chemicals