If coral polyps form reefs, then what do coral polyps form?  Answer choices: - lagoon  - graptolites  - a cuticle  - barnacles  - bioaerosols  - cave  - coral reef  - salt and water.
coral reef

If scraping oneself on a contaminated object may cause an area swollen with pus, then scraping oneself on a contaminated object may cause what?  Answer choices: - an area wet with medicine  - a pill for health  - cause their death  - an area clean from bacteria  - fissures of hot, acidic water  - an area swollen with pus  - contamination  - harmful substances
an area swollen with pus

If male gametes swim to female reproductive organs for fertilization, then what swims to female reproductive organs for fertilization?  Answer choices: - barnacles  - alpacas  - fur seals  - male gametes  - A Greek letter  - eggs  - birds  - tadpoles

male gametes