Problem:OPTIONS:
- infection
- flooding
- smoking
- worms
- water
- bacteria
- zygotes
- air

Fact 1: Infection can cause bodily tissues to swell. Fact 2: Connective tissue is the common network for bodily systems and energy pathways. Given the two facts above, what can cause connective issues to swell?
****
A: infection

Problem:OPTIONS:
- humans
- magnification
- barnacles
- Veins and arteries.
- gastropod shells
- invertebrates
- orchids
- the sun

Fact 1: Some mollusks are nearly microscopic. Fact 2: Mollusks are the dominant invertebrate. Given the two facts above, what are sometimes nearly microscopic?
****
A: invertebrates

Problem:OPTIONS:
- offspring
- edible
- pollinator
- fusion
- male
- red
- pollen
- embryos

Fact 1: Pollen consists of tiny grains that are the male gametes of plants. Fact 2: Pollen grains come from seed bearing plants. Given the two facts above, what seeds come from male gametes of plants?
****
A: pollen

Problem:OPTIONS:
- abrasion
- soil
- sand
- reservoirs
- earth
- broken
- ground
- Roads

Fact 1: Rain causes erosion. Fact 2: Erosion is the breaking apart and moving of rocks and soil. Given the two facts above, rain causes the breaking apart and moving of rocks and what?
****
A:
soil