Problem:OPTIONS:
- the Colorado
- the Pacific Ocean
- water evaporation
- bullfrogs
- peachleaf willow
- a hydraulic system
- mussels
- hydrogen

Fact 1: When a river floods , that river deposits soil in flood plains. Fact 2: Major river is the Colorado river. Given the two facts above, what deposits soil in flood plains when it floods?
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A: the Colorado

Problem:OPTIONS:
- the sense of smell
- sensory neurons
- salt and water.
- cellular respiration
- body position
- temperature
- gasoline
- kinetic energy

Fact 1: Balance is the ability to sense and maintain body position. Fact 2: Balance is a proprioceptive function. Given the two facts above, proprioceptive functions sense and maintain what?
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A: body position

Problem:OPTIONS:
- elms
- trees
- plants
- bamboo
- non-woody trunks
- snails
- edible
- daffodils

Fact 1: Most modern gymnosperms are trees with woody trunks. Fact 2: Gymnosperms comprise four divisions. Given the two facts above, a living thing with four divisions can be what with woody trunks?
****
A: trees

Problem:OPTIONS:
- haploid plants
- the Moon
- sexual reproduction
- asexual reproduction
- Nurseries of the ocean.
- single-celled organisms
- animals with backbones
- extinction

Fact 1: Sexual reproduction increases genetic diversity. Fact 2: Evolution requires genetic diversity. Given the two facts above, what begins evolution?
****
A:
sexual reproduction