You are presented with the quiz "what do coral polyps form?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "many corals secrete an exoskeleton that builds up to become a coral reef" and "coral reefs are made up of the accumulated exoskeletons of the coral polyp".   So, what's the best answer to the question?
OPTIONS:
- lagoon
- graptolites
- a cuticle
- barnacles
- bioaerosols
- cave
- coral reef
- salt and water.

Answer: coral reef


You are presented with the quiz "scraping oneself on a contaminated object may cause what?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "scraping oneself on a contaminated object may cause infection" and "an abscess is an infected area swollen with pus".   So, what's the best answer to the question?
OPTIONS:
- 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

Answer: an area swollen with pus


You are presented with the quiz "What swims to female reproductive organs for fertilization?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sperm had to swim from male to female reproductive organs for fertilization" and "sperm and eggs are cells known as gametes".   So, what's the best answer to the question?
OPTIONS:
- barnacles
- alpacas
- fur seals
- male gametes
- A Greek letter
- eggs
- birds
- tadpoles

Answer:
male gametes