Problem:OPTIONS:
- rainfall
- spring
- heat
- friction
- winter
- wind
- flooding
- erosion

Fact 1: Earth 's tilt on its rotating axis causes seasons to change. Fact 2: Winter is a horrible season. Given the two facts above, what does Earth's tilt on its rotating axis cause?
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A: winter

Problem:OPTIONS:
- feral dogs
- migration
- habitait loss
- amoebae
- hypothyroidism
- fuel emmisions
- Pesticides
- viruses

Fact 1: Harming an animal species causes that animal 's population to decrease. Fact 2: Habitat loss is the major reason for the decrease in the bird population. Given the two facts above, what has caused harm to the bird population?
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A: habitait loss

Problem:OPTIONS:
- friction
- Movement
- Physical weathering
- attracts fish
- reduced heat
- mechanical
- protect them
- It gets heated up

Fact 1: Dropping an object into water causes vibrations in the water. Fact 2: Fish are attracted by the vibration of the built-in action of the lure. Given the two facts above, dropping an object into the water does what?
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A: attracts fish

Problem:OPTIONS:
- H 2 O
- humans
- food
- shelter
- a path
- abcess
- mates
- water

Fact 1: Male dogs use pheromones in urine to mark their territory. Fact 2: All animals emit pheromones to mate. Given the two facts above, male dogs use urine to mark their territory the same way as they find what?
****
A:
mates