Fact 1: Adult tunicates are barrel-shaped. Fact 2: Urochordates are commonly called tunicates. Given the two facts above, adult urochordates are _-shaped.?

OPTIONS:
- Length
- a prism
- fossils
- grow
- barrel
- fertile
- Grow well
- revolving

Answer: barrel

Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Clearing of land can lead to erosion of soil into the river. Given the two facts above, what makes a river wider?

OPTIONS:
- rainfall
- salinity
- arteries
- flow of electrons
- Water expanding
- Physical weathering
- a hydraulic system
- clearing land

Answer: clearing land

Fact 1: Having food has a positive impact on an organism 's health. Fact 2: Birds and animals eat such food . Given the two facts above, what generally has a positive impact on an organism's health?

OPTIONS:
- stay warm
- sex with multiple partners
- smoking
- exercise
- nutrients
- eating
- Cooking
- fasting

Answer: eating

Fact 1: Most reptiles have good eyesight and a keen sense of smell. Fact 2: Bats have good eyesight and rely on vision for long-distance orientation. Given the two facts above, what rely on vision for long-distance orientation?

OPTIONS:
- alpacas
- mammals
- graptolites
- fur seals
- fur and fat
- insects
- most reptiles
- to move people

Answer:
most reptiles