(Question)
You are presented with the question "what do coral polyps form?" and the following answer choices: - lagoon - graptolites - a cuticle - barnacles - bioaerosols - cave - coral reef - salt and water. Now knowing 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, choose the best answer.
(Answer)
coral reef

(Question)
You are presented with the question "What can cause harm to an organism?" and the following answer choices: - Pesticides - a pathogens - Electrical exposure - electricity - Electrical energy - sales - children - food Now knowing that electrocution causes harm to an organism and electrical exposure causing death is referred to as electrocution, choose the best answer.
(Answer)
Electrical exposure

(Question)
You are presented with the question "What converts oxygen in water into oxygen in blood?" and the following answer choices: - sharks - germs - Enzymes - starfish - rivers - Jellyfish - streams - a fish Now knowing that breathing is when a gill converts from oxygen in water into oxygen in blood and gill slits form gills in fish, choose the best answer.
(Answer)
a fish