Problem:OPTIONS:
- sharks
- pan
- frogs
- Man
- Birds
- alpacas
- salmon
- a fish

Fact 1: Amphibians have a relatively complex circulatory system with a three-chambered heart. Fact 2: All frogs are amphibians. Given the two facts above, what has a relatively complex circulatory system with a three-chambered heart?
****
A: frogs

Problem:OPTIONS:
- thrives
- roots
- rocks
- cows
- animals
- fibrous
- horses
- cacti

Fact 1: If a plant requires less water then that plant will survive in a drought. Fact 2: Cacti and succulents can go without water for a long period. Given the two facts above, what survives in drought?
****
A: cacti

Problem:OPTIONS:
- seeds
- honeybees
- Energy.
- rocks
- acid rain
- nutrients
- buds
- energy

Fact 1: Plant reproduction often requires pollen. Fact 2: Honeybees and other bees transfer the pollen. Given the two facts above, plant reproduction often requires what?
****
A: honeybees

Problem:OPTIONS:
- mildew
- loss
- fungi
- Poisonous
- Ripeness
- Freshness
- Aging
- drought

Fact 1: Aging is associated with the death of cells. Fact 2: Fruit browning is believed to be a process of early cell aging and death. Given the two facts above, what is fruit browning associated with?
****
A:
Aging