Fact 1: The looseness of soil increases the amount of oxygen in that soil. Fact 2: Oxygen in the soil is vital for healthy roots. Given the two facts above, what is vital for healthy roots?

OPTIONS:
- green leaves
- nutrients
- a healthy stem
- hydration
- looseness of soil
- nearby mushrooms
- aqueous solution
- Organic compounds

Answer: looseness of soil

Problem: OPTIONS:
- Helps them pollinate
- Helps them grow
- duplicate itself
- hydrate their cells
- Makes them taste better
- hydrogen and oxygen
- Decrease bodily water
- Kills them
Q: Fact 1: Aplant requires nutrients to grow. Fact 2: Potassium is an essential nutrient for plants and animals. Given the two facts above, what does potassium do for plants?
Answer: Helps them grow

Problem:OPTIONS:
- decrease stamina
- evaporation
- hydration
- Preserves it
- Causes bacteria to spread
- chemical changes
- Causes it to rot
- Cooks it

Fact 1: Dehydrating food is used for preserving food. Fact 2: Foods usually were covered with copious quantities of salt or saturated salt brine, and the salt was allowed to infuse into the tissue while dehydrating the product. Given the two facts above, what does salting food do to it?
****
A: Preserves it

Fact 1: Harming an animal species has a negative impact on the population size of that species. Fact 2: Populations are the sub-units of species. Given the two facts above, harming an animal species has a negative impact on the what?
OPTIONS:
- sub-units of species
- single-celled organisms
- diet of species
- most organisms
- color of species
- ancestors of species
- Abnormal cell growth
- Males and females
sub-units of species

Fact 1: The emission of sulfur dioxide causes acid rain. Fact 2: Most sulfur dioxide comes from the combustion of oil and coal. Given the two facts above, what causes acid rain?
OPTIONS:
- burn
- oil
- coal
- lung
- DDT
- tar
- Cars
- wind

Answer: oil

input with options: Fact 1: Gene flow occurs when individuals move into or out of a population. Fact 2: Gene flow tends to decrease differentiation. Given the two facts above, what tends to occur when individuals move into or out of a population?
OPTIONS:
- competing for resources
- extinction
- matter is destroyed
- metabolic reaction
- rapid exponential growth
- seed dispersal
- decreased differentiation
- permineralization
output:
decreased differentiation