Problem:OPTIONS:
- Electric devices
- smoking cigarettes
- smoking
- magic
- Good will
- laughter
- Some viruses
- Pesticides

Fact 1: Some viruses can cause cancer. Fact 2: Some cancers are fatal. Given the two facts above, what can be fatal?
****
A: Some viruses

Problem:OPTIONS:
- cellulose
- Collagen
- chemicals
- energy
- seeds
- a chime
- nectar
- hormones

Fact 1: Nectar is used for attracting pollinators by plants. Fact 2: Birds are flowering plant pollinators. Given the two facts above, what is used to attract birds to flowering plants?
****
A: nectar

Problem:OPTIONS:
- camels
- snail
- bats
- cricket
- a fish
- bird
- koalas
- octopus

Fact 1: Birds are endothermic tetrapod vertebrates. Fact 2: Animals with backbones are called vertebrates. Given the two facts above, which animal has a backbone?
****
A: bird

Problem:OPTIONS:
- batteries
- chemical energy
- adding heat
- electrical energy
- objects that have mass
- mechanical waves
- electricity
- direct energy

Fact 1: When an animal moves , chemical energy is converted to mechanical energy. Fact 2: Bats are animals that fly around at night. Given the two facts above, what is converted into mechanical energy when bats fly?
****
A:
chemical energy