Fact 1: Cross-pollination increases genetic diversity. Fact 2: Cross Pollination Cross pollination is the gene flow between similar species of plants. Given the two facts above, what happens with the gene flow between similar species of plants?

OPTIONS:
- Genetic diversity is increased
- sperm and egg fuse
- basic building blocks of life
- The gene flow dies
- biological diversity
- Genetic diversity is decreased
- It helps them survive
- The plant dies

Answer: Genetic diversity is increased

Problem: OPTIONS:
- hydrogen
- root growth
- weathering
- animals
- artificial intelligence
- mutation
- trees
- competition
Q: Fact 1: Mutation creates new genetic variation in a gene pool. Fact 2: Genetic variation is the basis for natural selection. Given the two facts above, what is the basis for natural selection?
Answer: mutation

Problem:OPTIONS:
- sensory neurons
- They have thick fur
- fur and fat
- food and shelter
- four limbs
- important habitats
- They have webbed feet
- Propubic pelvis

Fact 1: Birds evolved from a group of bipedal dinosaurs called theropods. Fact 2: Like most theropods, the pelvis is propubic. Given the two facts above, what do birds have?
****
A: Propubic pelvis

Fact 1: Stalactites are formed by deposition. Fact 2: Small stalactites predominate on the cave roof. Given the two facts above, what is formed by deposition?
OPTIONS:
- h2o
- oceans
- Sediment
- soft soil
- calcite
- clouds
- cave roofs
- Sand dollars
cave roofs

Fact 1: Macroevolution occurs over geologic time above the level of the species. Fact 2: Macroevolution is simply microevolution extrapolated over longer periods of time. Given the two facts above, what occurs over geologic time above the level of the species?
OPTIONS:
- tectonic plates coliding
- wind and erosion
- remains of prehistoric life
- Earth revolving around the sun
- rapid expansion
- microevolution extrapolated
- the wearing away of rock
- tectonic plates being pushed together

Answer: microevolution extrapolated

input with options: Fact 1: Macroevolution is evolution over geologic time above the level of the species. Fact 2: Dates are provided for the recognized eras and periods of geologic time. Given the two facts above, macroevolution above the level of the species happens over what?
OPTIONS:
- seasons
- eras
- scale
- Earth
- plates
- days
- minutes
- years
output:
eras