Fact 1: Some parasites kill their host, but most do not. Fact 2: All parasites are harmful to their host, but some are beneficial to humans. Given the two facts above, some what are beneficial to humans?
OPTIONS:
- fungi
- parasites
- roots
- humans suffering
- natural disasters
- honeybees
- poisons
- orchids

Answer: parasites

Fact 1: Biofuel is used to produce electricity by burning. Fact 2: Biofuels include ethanol, methanol, biodiesel, biocrude, and methane. Given the two facts above, if ethanol were burned, what could be made?
OPTIONS:
- nuclear waste
- energy
- massive damage
- coal tar
- Solutions
- engines
- electricity
- plastic

Answer: electricity

Fact 1: Mollusks reproduce sexually. Fact 2: Clams, oysters and snails are familiar mollusks. Given the two facts above, how do snails reproduce?
OPTIONS:
- Asexually
- seeds
- Sexually
- ligt
- mechanical
- Eggs
- Pollination
- movement

Answer:
Sexually