<p>26. What does abiotic mean? Non-living</p><p>27. The base of the ocean's food chains is formed by: Plankton</p><p>28. What are the abiotic factors in marine ecosystems? 1. Water temp. 2. Water depth 3. Amount of sunlight</p><p>29. Name and describe the 4 levels of the ocea n: (only have to describe 1 & 4) 1 intertidal – where the water meets land 2 neritic 3 oceanic 4 benthic – ocean floor</p><p>30. What is the main abiotic factor of a freshwater ecosystem? How quickly the water flows</p><p>31. An ecosystem with wet soil, willow trees, and orchids is likely? Swamp</p><p>32. A lake may become a forest when : it becomes filled with sediment</p><p>33. Most of the nutrients in a tropical rain forest are found in plants, so what kind of soil does it have? Poor, lacking nutrients</p><p>34. From your text book, list 4 lab safety rules? 1. no running in lab 2. no food or drink in lab 3. keep hair and jewelry pulled back 4. do not begin without instruction from teacher</p><p>36. What is the difference between biotic and abiotic? Biotic – living Abiotic - nonliving</p><p>37. Organisms belonging to the SAME species living together in the same area at the same time are: Population</p><p>38. The ------is the part of the earth where life exists. Biosphere</p><p>39. Nature's recyclers are: Decomposers</p><p>40. In a food web, the arrow means: Gives energy to 41. Model airplanes, baby dolls and maps are examples of which type of model? Physical Models</p><p>42. In an experiment, the variable that I can intentionally change is the: Independent</p><p>43. In an experiment, the variable that does not change is the: Constant</p><p>44. What is data? Info Gathered</p><p>45. An example of experimental error is:</p><p>46. The biome that we live in is: Temperate Deciduous Forest</p><p>47. Where do we graph the dependent variable: Y axis</p><p>48.When you make a graph, what all should the graph include? Title, labels, units</p>