Fact 1: Sharpening an object causes that object to change shape. Fact 2: Very often their only metal object in the house is a cooking pot or a knife. Given the two facts above, what does sharpening a knife do?

OPTIONS:
- change its material
- make it stay the same
- lowered energy cost
- duplicate itself
- Relieve pain
- change its shape
- change its color
- It gets heated up

Answer: change its shape

Problem: OPTIONS:
- permineralization
- deuterostomes
- barrel-shaped
- cactuses
- swamp vegetation
- peachleaf willow
- precipitation
- gene flow
Q: Fact 1: Sinkholes are formed by precipitation. Fact 2: Sinkholes are common in the southwestern portion of the subsection. Given the two facts above, what is common in the southwestern portion of the subsection?
Answer: precipitation

Problem:OPTIONS:
- bushes
- on calories
- habitat
- manmade structures
- invasive species
- disease
- bamboo
- trees

Fact 1: Cutting down trees has a negative impact on an ecosystem. Fact 2: Ecosystems are living communities. Given the two facts above, cutting down what has a negative impact on living communities?
****
A: trees

Fact 1: Mollusks have a circulatory system with one or two hearts that pump blood. Fact 2: Interestingly, a squid is also a mollusk. Given the two facts above, what has a circulatory system with one or two hearts that pump blood?
OPTIONS:
- squids
- fur seals
- the Sun
- goats
- the ocean
- rocks
- sharks
- a fish
squids

Fact 1: The Earth being tilted on its rotating axis causes seasons. Fact 2: Spring, summer, autumn, and winter are the seasons of the year. Given the two facts above, what causes spring, summer, autumn, and winter?
OPTIONS:
- meteor showers
- heat production
- the sun's energy
- Generating heat
- Earth tilted on rotating axis
- Something with a head, thorax, and abdomen
- Earth vibrating
- lunar cycle

Answer: Earth tilted on rotating axis

input with options: Fact 1: Pathogens can cause disease. Fact 2: Most pathogens are bacteria. Given the two facts above, what can cause disease?
OPTIONS:
- oxygen
- Pesticides
- cold temperatures
- smoking
- bacteria
- toxins
- digestion
- influenza
output:
bacteria