input: OPTIONS:
- Time and energy
- Plant reproduction
- cross-pollination
- Reproduction
- gene flow
- coded genes
- circulatory systems
- animals with backbones Now, answer this question: Fact 1: Cross-pollination increases genetic diversity. Fact 2: Evolution requires genetic diversity. Given the two facts above, what does evolution require?
A:
output: cross-pollination

Fact 1: Air pollution harms the respiratory and circulatory systems. Fact 2: Air pollution, or smog, is caused by cars and trucks. Given the two facts above, what harms the respiratory system?

OPTIONS:
- coal
- oxygen
- tar
- cigars
- breathing
- silence
- sulfur
- cars

Answer: cars

Problem: OPTIONS:
- live
- dense
- store
- grow
- work
- move
- growth
- ferns
Q: Fact 1: Flagella help prokaryotes move. Fact 2: Cilia and flagella are composed of microtubules. Given the two facts above, microtubules help prokaryotes _.?
Answer: move

Problem:OPTIONS:
- Acid quality
- most organisms
- our planet
- Work quality
- Sand quality
- one celled organisms
- watershed
- Habitat quality

Fact 1: Acid rain has a negative impact on water quality. Fact 2: Water quality also affects habitat quality. Given the two facts above, what does acid rain have a negative impact on?
****
A: Habitat quality

Fact 1: Cells secrete acids and bases to maintain the proper pH for enzymes to work. Fact 2: An enzyme is a biological catalyst . Given the two facts above, catalysts require proper what to work?
OPTIONS:
- DNA
- pH
- pan
- RNA
- elevation
- time of day
- gas
- humidity
pH

Fact 1: Most modern gymnosperms are trees with woody trunks. Fact 2: Gymnosperms are the plants that are known as evergreens. Given the two facts above, what type of trees have woody trunks?
OPTIONS:
- h2o
- plants
- sunflowers
- cacti
- evergreens
- trees
- graptolites
- elephants

Answer:
evergreens