QUESTION 12 A mule is a cross between a horse and a donkey. Why is it NOT considered a species? Horses and donkeys don't typically interbreed without human intervention There is nowhere to classify it in the biological classification It is not found naturally in the wild Mules are infertile and cannot reproduce QUESTION 13 Which of the following is an abiotic factor? (Select ALL correct answers) Fungi Water Nutrients Bacteria Sand QUESTION 14 Which of these processes do oak trees perform? Neither process Both processes O Photosynthesis OOO O Cellular respiration QUESTION 15 Which of these is an inexhaustible resource? sunlight trees ethanol natural gas Ofresh water 000 QUESTION 16 Where should conservation efforts be focused to maximize the benefits? Species level Genetic level Ecosystem level QUESTION 17 What total fertility rate (TFR) is needed to maintain the current population size with NO increase or decrease (i.e., replacement-level fertility)? 01 01.1 02 2.1 QUESTION 18 Use the following scenario: A student washes her hands with an antibacterial soap (Soap A) and water for 60 seconds and then touches her thumb into a gel- that contains nutrients for growing bacteria. Other students in the class repeat the procedure after washing their hands with either Soap A, Soap B, or water. The next week the students count the number of bacterial colonies in each dish to see which soap is more effective at killing bacteria. Question: What is the control in this experiment? Washing hands with just water Washing hands with Soap B The type of nutrients in the gel plate The number of seconds used in handwashing The number of times the experiment was repeated