Problem: OPTIONS:
- nutrients
- burrs
- exercise
- support
- evaporation
- looseness
- Sand dollars
- sun's heat
Q: Fact 1: The looseness of soil has a positive impact on a plant 's roots' growth in that soil. Fact 2: Soil or dirt is typically high in silica and alumina. Given the two facts above, what has a positive impact on root growth in dirt?
Answer: looseness

Problem:OPTIONS:
- harmful substances
- Chlorophyll
- the skin
- the eyes
- organs
- layers of fat
- DNA sequence
- alleles

Fact 1: Most carcinogens cause cancer by producing mutations in DNA. Fact 2: Mutations are changes in the DNA sequence. Given the two facts above, most carcinogens cause cancer by producing changes in what?
****
A: DNA sequence

Fact 1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Fact 2: ALL immunogens are antigens. Given the two facts above, what can antibodies (large Y-shaped proteins) recognize and bind to?
OPTIONS:
- animals
- fish
- blood types
- positive
- immunogens
- cats
- humans
- the skin
immunogens

Fact 1: Echinoderms lack a centralized nervous system. Fact 2: Echinoderms are represented by the starfish. Given the two facts above, what lacks a centralized nervous system?
OPTIONS:
- starfish
- barnacles
- blowfish
- our planet
- humans
- Pesticides
- insects
- sharks

Answer: starfish

Question: Fact 1: Gases released during the use of fossil fuels causes global warming. Fact 2: Oil is a fossil fuel. Given the two facts above, gases released from the use of what causes global warming?
OPTIONS:
- CO2
- coal
- CO 2
- h2o
- hydrogen
- cooking
- oil
- CFCs
Answer: oil

input: OPTIONS:
- hyperthyroidism
- lowered energy cost
- harmful substances
- Heart rate
- good visibility
- It gets heated up
- Pollution
- rainfall Now, answer this question: Fact 1: High pressure systems cause clear weather. Fact 2: Weather Clear weather usually means good visibility. Given the two facts above, what does a high pressure system cause?
A:
output:
good visibility