Q: Fact 1: Muscle contraction occurs when muscle fibers get shorter. Fact 2: Muscles are bundles of fibers that can contract. Given the two facts above, what contracts as it gets shorter?

OPTIONS:
- layers of fat
- Epidermis
- Veins and arteries.
- Shortstop
- Labor
- Contracts
- the body's largest organ
- Bundles of fibers

A: Bundles of fibers

Q: Fact 1: Arthropods have a life cycle with sexual reproduction. Fact 2: Insects are the largest group of arthropods. Given the two facts above, what has a life cycle with sexual reproduction?

OPTIONS:
- animals
- insects
- fungi
- mammals
- barnacles
- bushes
- tortoises
- plants

A: insects

Q: Fact 1: Many plants respond to the days growing shorter in the fall by going dormant. Fact 2: Cottonwoods are dormant during the fall. Given the two facts above, what happens to cottonwoods when the days get shorter?

OPTIONS:
- They bloom
- They go dormant
- Dehydration
- It helps them survive
- Exfoliation
- They die
- They reproduce
- They may not survive.

A: They go dormant

Q: Fact 1: Cancer cells divide more often than normal cells, and grow out of control. Fact 2: Cancer cells are abnormal and divide without control or order. Given the two facts above, what kind of cells are abnormal?

OPTIONS:
- nuclear
- kidney
- cell wall
- dangerous
- white
- parasites
- negative
- cancer

A:
cancer