Problem:OPTIONS:
- spinal column
- hard bones
- aerobic capacity
- cartilage bones
- critical organs
- joints
- fur and fat
- graptolites

Fact 1: Vertebrate chordates have a backbone. Fact 2: Invertebrates are animals who lack a backbone or spinal column. Given the two facts above, vertebrate chordates have what part of the skeletal system?
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A: spinal column

Problem:OPTIONS:
- burning
- burying
- degrading
- hydration
- boiling
- Light
- sharing
- cooking

Fact 1: Cooking food requires adding heat energy. Fact 2: Heat is essentially the source of energy. Given the two facts above, doing what to food requires adding the source of energy?
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A: cooking

Problem:OPTIONS:
- varied life cycles
- Chlorophyll
- Organic compounds
- absorb light energy
- photosynthesis
- food and shelter
- Chemical energy
- kinetic energy

Fact 1: Algae have varied life cycles. Fact 2: Algae Algae Green algae are the simplest of green plants. Given the two facts above, the simplest of green plants have what?
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A: varied life cycles

Problem:OPTIONS:
- sun light
- hormones
- buzzing
- honey
- sugary liquid
- hydrogen and oxygen
- Electrical energy
- organic molecules

Fact 1: Nectar is used for attracting pollinators by plants. Fact 2: Nectar Nectar is the sugary liquid produced by many flowers. Given the two facts above, what do flowers use to attract pollinators? ?
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A:
sugary liquid