{
  "id": "0a35f932-3af1-59f0-afb1-79b314d8cfa9",
  "slug": "topic-4-water-hl",
  "title": "Topic 4: Water (HL)",
  "course": "IB ESS",
  "level": "HL",
  "topic": 4,
  "questionCount": 7,
  "page": "https://splycr.com/ib-ess/topic-4-water-hl",
  "data": "https://splycr.com/library/topic-4-water-hl.json",
  "play": "https://splycr.com/?set=0a35f932-3af1-59f0-afb1-79b314d8cfa9",
  "section": {
    "name": "Topic 4: Water",
    "page": "https://splycr.com/ib-ess/water"
  },
  "source": {
    "name": "Biology by Bradford",
    "href": "https://biologybybradford.com"
  },
  "questions": [
    {
      "number": 1,
      "question": "Ocean circulation driven by differences in water temperature and salinity (density); distributes heat globally?",
      "answer": "Thermohaline circulation",
      "wrongOptions": [
        "Water stress",
        "Biotic index",
        "Indicator species"
      ]
    },
    {
      "number": 2,
      "question": "Upward movement of cold, nutrient-rich deep water to the surface displacing warmer surface water?",
      "answer": "Upwelling",
      "wrongOptions": [
        "Thermocline",
        "Hypoxia",
        "Biotic index"
      ]
    },
    {
      "number": 3,
      "question": "Distinct boundary layer in a water body between warmer surface water and cooler deep water?",
      "answer": "Thermocline",
      "wrongOptions": [
        "Hypoxia",
        "Upwelling",
        "Water stress"
      ]
    },
    {
      "number": 4,
      "question": "Condition where accessible water supply falls below 1,700 m³ per person per year?",
      "answer": "Water stress",
      "wrongOptions": [
        "Indicator species",
        "Biotic index",
        "Thermohaline circulation"
      ]
    },
    {
      "number": 5,
      "question": "Condition in which dissolved oxygen in water falls so low (below about 2 mg/L) that most fish and invertebrates cannot survive?",
      "answer": "Hypoxia",
      "wrongOptions": [
        "Thermocline",
        "Upwelling",
        "Indicator species"
      ]
    },
    {
      "number": 6,
      "question": "Organism whose presence, absence or abundance reveals pollution levels because of its known tolerance or sensitivity?",
      "answer": "Indicator species",
      "wrongOptions": [
        "Biotic index",
        "Water stress",
        "Upwelling"
      ]
    },
    {
      "number": 7,
      "question": "Score calculated from the presence and abundance of pollution-tolerant and pollution-intolerant species at a site?",
      "answer": "Biotic index",
      "wrongOptions": [
        "Water stress",
        "Indicator species",
        "Upwelling"
      ]
    }
  ]
}