Problem: OPTIONS:
- structure
- four limbs
- organ
- Chlorophyll
- Energy
- layers of fat
- health
- Energy.
Q: Fact 1: All cells share some of the same structures and basic functions. Fact 2: Cells are also the basic functioning unit of life. Given the two facts above, the basic functioning unit of life all share the same what?
Answer: structure

Problem:OPTIONS:
- high temperature
- movements in the earth's crust
- human migration
- exposure to cold
- cloud formation
- energy of moving objects
- soil
- degrees Celsius

Fact 1: An earthquake causes the ground to shake. Fact 2: Earthquakes are movements in the Earth's crust. Given the two facts above, what causes the ground to shake?
****
A: movements in the earth's crust

Fact 1: The gravitational pull of the Moon on Earth 's oceans causes the tides. Fact 2: Tides are the rising and falling of ocean's water. Given the two facts above, the gravitational pull of the Moon on Earth 's oceans causes water to what?
OPTIONS:
- vaporization
- mouth of rivers
- fall down a hole
- rise and fall
- Condensation
- sink into the crust
- disappear forever
- It gets heated up
rise and fall

Fact 1: Immunodeficiency occurs when the immune system is not working properly. Fact 2: HIV, the human immunodeficiency virus, is a retrovirus. Given the two facts above, what causes the immune system to not work properly?
OPTIONS:
- HIV
- lack
- DDT
- p53
- antibiotics
- h2o
- memory cells
- HPV

Answer: HIV

Question: Fact 1: Air pollution can cause the pH of soil to decrease. Fact 2: Incineration releases pollutants into the air. Given the two facts above, what can cause the pH of the soil to increase?
OPTIONS:
- incineration
- dry conditions
- Greenhouse gases
- clean water
- contamination
- air
- erosion
- clean rain
Answer: incineration

input: OPTIONS:
- kinetic energy
- Energy.
- warmth
- voltage
- sun's heat
- temperature
- complexity
- sunlight Now, answer this question: Fact 1: Biodiversity generally increases from the poles to the equator. Fact 2: Biodiversity and ecosystems are complex systems. Given the two facts above, what generally increases from the poles to the equator?
A:
output:
complexity